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Curiosity Blog, Sols 4600-4601: Up and Over the Sand Covered Ramp
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Curiosity Blog, Sols 4600-4601: Up and Over the Sand Covered Ramp NASA’s Mars rover Curiosity acquired this image using its Left Navigation Camera on July 13, 2025 — Sol 4598, or Martian day 4,598 of the Mars Science Laboratory mission — at 15:24:10 UTC. NASA/JPL-CaltechWritten by Sharon Wilson Purdy, Planetary Geologist at the Smithsonian National Air and Space Museum
Earth planning date: Monday, July 14, 2025
The Curiosity rover continues to navigate through the region of Mount Sharp characterized by the boxwork terrain. After successfully completing a drive of about 34 meters over the weekend (about 112 feet), the rover parked near the edge of a smooth, sandy stretch at the base of a ridge that leads to the most prominent and complex network of boxwork structures seen so far.
Due to the lack of exposed bedrock in the immediate workspace, the science team opted to give some of the rover’s contact science instruments a break. With the dust removal tool (DRT) and APXS instruments stowed, the extra energy allowed the Mars Hand Lens Imager (MAHLI) to take high resolution images of “Playa de la Gallina” to survey the uniform, smooth surface consisting of sand and pebble-sized material.
The ChemCam and Mastcam teams scheduled several observations in this two-sol plan that further investigated the rocks and structures in our immediate vicinity and surroundings. ChemCam LIBS was used to target “El Olivo” to determine the chemistry of the bumpy textured bedrock near the rover, which was also imaged by a Mastcam stereo mosaic. Additional Mastcam stereo mosaics include fractures at “El Corral” and linear troughs at “Chapare.” Further away, ChemCam’s Remote Micro Imager (RMI) will provide insight into an intriguing section of scoured features within the Mishe Mokwa butte.
The environmental working group continues to keep an eye in the sky and planned a supra-horizon movie and a dust-devil survey as part of their ongoing monitoring campaign of the atmospheric conditions in Gale Crater.
The 21-meter-long drive (about 69 feet) at the end of this plan will maneuver the rover past the sandy ramp to the top of the main boxwork region. From here, the science team will be able to explore this fascinating area of particularly large boxwork structures. Stay tuned as Curiosity continues to climb higher and delve deeper into the geologic history of Mars!
For more Curiosity blog posts, visit MSL Mission Updates
Learn more about Curiosity’s science instruments
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Curiosity Blog, Sols 4597-4599: Wide Open Spaces
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Curiosity Blog, Sols 4597-4599: Wide Open Spaces NASA’s Mars rover Curiosity acquired this image, of the sweeping Mount Sharp vista into which the rover will drive the weekend of July 11-12, 2025, using its onboard Left Navigation Camera. Curiosity captured the image on July 11, 2025 — Sol 4596, or Martian day 4,596 of the Mars Science Laboratory mission — at 12:01:55 UTC. NASA/JPL-CaltechWritten by Michelle Minitti, MAHLI Deputy Principal Investigator, Framework
Earth planning date: Friday, July 11, 2025
Imagine this vista as the view out your office window to start your workday. Your natural tendency would be to grab your camera and photograph as much of the view as possible. Curiosity was lucky enough to find herself in this situation today after a successful drive of about 61 meters (about 200 feet) on Wednesday, and the science team operating Curiosity wasted no time papering the scene with mosaics.
Between Mastcam and ChemCam, we planned 105 images across the scene. Those images will capture the structures underpinning the boxwork ridges we are driving toward, smaller-scale fractures in the near field that might be related to the boxwork ridges, and the back side of a ridge we recently studied in detail, “Volcán Peña Blanca.” Together, the images will help us understand the geologic history of the area that hosts the boxwork ridges, and what conditions existed in this part of Mount Sharp to support their formation.
We did not neglect the rocks directly in front of the rover as we gazed at our surroundings. Indeed, the bedrock near the rover was nearly uniformly packed with small (less than 1 centimeter, or 0.39 inches) rounded nodules, a characteristic we have not seen for awhile. MAHLI will image three different instances of the nodules while APXS and ChemCam will each analyze two different targets to understand the chemistry of the nodules and the bedrock hosting them.
REMS, RAD, and DAN will continue to monitor the Martian environment and subsurface throughout the weekend. Additionally, we planned multiple observations of dust devils, the amount of dust in the atmosphere, and clouds including a cloud movie timed to match the overflight of the CASSIS instrument. Our drive will take us to the foot of the smooth slope seen in the distance of the above image. That slope is the ramp we will take to the top of a big boxwork structure, where surely other delightful vistas await.
For more Curiosity blog posts, visit MSL Mission Updates
Learn more about Curiosity’s science instruments
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NASA Selects Companies for Architect-Engineer Services Contract
NASA has selected seven companies to assist the agency with architectural and engineering services at multiple agency centers and facilities.
The Western Regional Architect-Engineer Services is an indefinite-delivery/indefinite-quantity multiple award contract has a total estimated value not to exceed $75 million. The contract was awarded on July 14 with a five-year period of performance with the possibility of a six-month extension.
The selected contractors are:
- DYNOTEC-KZF JV LLC of Columbus, Ohio
- Merrick-IMEG JV LLP of Greenwood Village, Colorado
- G Squared Design of Lakewood, Colorado
- Kal Architects Inc. of Irvine, California
- AECOM Technical Services Inc. of Los Angeles
- Stell SIA Sala O’Brien LLC DBA S3, LLC (S3) of Mountlake Terrace, Washington
- Jacobs Engineering Group Inc. of Arlington, Virginia
Under the contract, the awarded companies will support general construction, alteration, modification, maintenance and repair, new construction of buildings, facilities, and real property for NASA’s Ames Research Center in California’s Silicon Valley and Armstrong Flight Research Center in Edwards, California. Support also includes optional back-up capacity in support of other NASA centers and federal tenants at agency facilities, including NASA’s Jet Propulsion Laboratory in Southern California, Goldstone Deep Space Communications Complex in Fort Irwin, California, and the NASA launch alliance at Vandenberg Space Force Base in California.
For information about NASA and other agency programs, visit:
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Tiernan Doyle
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NASA SCoPE Summer Symposium Celebrates Early Career Scientists and Cross-Team Collaboration
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NASA SCoPE Summer Symposium Celebrates Early Career Scientists and Cross-Team CollaborationFrom June 16–18, 2025, the NASA Science Mission Directorate Community of Practice for Education (SCoPE) Summer Symposium brought together a community of scientists, educators, and outreach professionals to celebrate and strengthen NASA’s commitment to developing its workforce and broadening participation in science.
NASA SCoPE is a NASA-funded initiative at Arizona State University that connects early career scientists with NASA Science Activation (SciAct) program teams to build capacity in science communication, community engagement, and educational outreach. Through targeted support like Seed Grants, Travel Grants, and Mission Liaison opportunities, SCoPE equips scientists with the skills and networks needed to meaningfully engage the public with NASA science.
Held in collaboration with key SciAct teams—including Infiniscope, Co-creating with Communities, NASA’s Community College Network, and NASA’s Universe of Learning—the 2025 symposium highlighted the incredible impact of SCoPE over the past four and a half years. The program has financially supported more than 100 early career scientists across a growing network of nearly 1,000 participants.
Over the course of the three-day event, 23 awardees of SCoPE Seed Grants, Travel Grants, and Mission Liaison Grants came together to share their work, connect across disciplines, and explore new avenues for collaboration. Twelve Seed Grant awardees presented their projects, illustrating the transformative power of partnerships with SciAct teams. Highlights included learning how to write for young audiences through mentorship from NASA eClips in support of the children’s book ‘Blai and Zorg Explore the Moon’, designed for elementary learners; a collaborative effort between ‘Lost City, Icy Worlds’ and OpenSpace that evolved into long-term networking and visualization opportunities; and an Antarctic research project that, through collaboration with the Ocean Community Engagement and Awareness using NASA Earth Observations and Science (OCEANOS) project and Infiniscope, both expanded training opportunities for expedition guides and brought polar science to Puerto Rican high school summer interns.
Beyond formal sessions, the symposium embraced community building through shared meals, informal networking, and hands-on experiences like a 3D planetarium show using OpenSpace software, a telescope demonstration with 30 high school students, and a screening of NASA’s Planetary Defenders documentary. Workshop topics addressed the real-world needs of early career professionals, including grant writing, logic model development, and communicating with the media.
Survey responses revealed that 95% of attendees left with a stronger sense of belonging to a community of scientists engaged in outreach. Participants reported making valuable new connections—with peers, mentors, and potential collaborators—and left inspired to try new approaches in their own work, from social media storytelling to designing outreach for hospital patients or other specialized audiences.
As one participant put it, “Seeing others so passionate about Science Communication inspired me to continue doing it in different ways… it feels like the start of a new wave.” Another attendee remarked, “I want to thank the entire team for SCoPE to even exist. It is an incredible team/program/resource and I can’t even imagine the amount of work, dedication and pure passion that has gone into this entire project over the years. Although I only found SCoPE very recently, I feel like it has been incredibly helpful in my scientific journey and I only wish I had learned of the program sooner. Thank you to the entire team for what was a truly educational and inspirational workshop, and the wonderful community that SCoPE has fostered.”
This successful event was made possible through the dedication of NASA SciAct collaborators and the leadership of SciAct Program Manager Lin Chambers, whose continued support of early career engagement through SCoPE has created a growing, connected community of science communicators. The SCoPE Summer Symposium exemplifies how cross-team collaboration and community-centered design can effectively amplify the reach of NASA science.
Learn more about how NASA’s Science Activation program connects NASA science experts, real content, and experiences with community leaders to do science in ways that activate minds and promote deeper understanding of our world and beyond: https://science.nasa.gov/learn/about-science-activation/
SCoPE-funded scientists and collaborators gather at the 2025 SCoPE Summer Symposium to celebrate program success, share ideas, build partnerships, and advance science communication and education efforts across NASA’s Science Activation program. Share Details Last Updated Jul 15, 2025 Editor NASA Science Editorial Team Related Terms Explore More 4 min read Linking Satellite Data and Community Knowledge to Advance Alaskan Snow ScienceArticle
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Hubble Observations Give “Missing” Globular Cluster Time to Shine
A previously unexplored globular cluster glitters with multicolored stars in this NASA Hubble Space Telescope image. Globular clusters like this one, called ESO 591-12 or Palomar 8, are spherical collections of tens of thousands to millions of stars tightly bound together by gravity. Globular clusters generally form early in the galaxies’ histories in regions rich in gas and dust. Since the stars form from the same cloud of gas as it collapses, they typically hover around the same age. Strewn across this image of ESO 591-12 are a number of red and blue stars. The colors indicate their temperatures; red stars are cooler, while the blue stars are hotter.
Hubble captured the data used to create this image of ESO 591-12 as part of a study intended to resolve individual stars of the entire globular cluster system of the Milky Way. Hubble revolutionized the study of globular clusters since earthbound telescopes are unable to distinguish individual stars in the compact clusters. The study is part of the Hubble Missing Globular Clusters Survey, which targets 34 confirmed Milky Way globular clusters that Hubble has yet to observe.
The program aims to provide complete observations of ages and distances for all of the Milky Way’s globular clusters and investigate fundamental properties of still-unexplored clusters in the galactic bulge or halo. The observations will provide key information on the early stages of our galaxy, when globular clusters formed.
Image credit: NASA, ESA, and D. Massari (INAF — Osservatorio di Astrofisica e Scienza dello Spazio); Processing: Gladys Kober (NASA/Catholic University of America)
NASA’s SpaceX Crew-11 Mission Gears Up for Space Station Research
A host of scientific investigations await the crew of NASA’s SpaceX Crew-11 mission during their long-duration expedition aboard the International Space Station. NASA astronauts Zena Cardman and Mike Fincke, and JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui, are set to study plant cell division and microgravity’s effects on bacteria-killing viruses, as well as perform experiments to produce a higher volume of human stem cells and generate on-demand nutrients.
Here are details on some of the research scheduled during the Crew-11 mission:
Making more stem cells Cultures of stem cells grown in 2D on Earth, left, and as 3D spheres in simulated microgravity on Earth.BioServeA stem cell investigation called StemCellEx-IP1 evaluates using microgravity to produce large numbers of induced pluripotent stem cells. Made by reprogramming skin or blood cells, these stem cells can transform into any type of cell in the body and are used in regenerative medicine therapies for many diseases. However, producing enough cells on the ground is a challenge.
Researchers plan to use the microgravity environment aboard the space station to demonstrate whether generating 1,000 times more cells is possible and whether these cells are of higher quality and better for clinical use than those made on Earth. If proven, this could significantly improve future patient outcomes.
“This type of stem cell research is a chance to find treatments and maybe even cures for diseases that currently have none,” said Tobias Niederwieser of BioServe Space Technologies, which developed the investigation. “This represents an incredible potential to make life here on Earth better for all of us. We can take skin or blood cells from a patient, convert them into stem cells, and produce custom cell-therapy with little risk for rejection, as they are the person’s own cells.”
Alternative to antibiotics Genes in Space-12 student investigators Isabella Chuang, left, and Julia Gross, middle, with mentor Kayleigh Ingersoll Omdahl.Genes in SpaceGenes in Space is a series of competitions in which students in grades 7 through 12 design DNA experiments that are flown to the space station. Genes in Space-12 examines the effects of microgravity on interactions between certain bacteria and bacteriophages, which are viruses that infect and kill bacteria. Bacteriophages already are used to treat bacterial infections on Earth.
“Boeing and miniPCR bio co-founded this competition to bring real-world scientific experiences to the classroom and promote molecular biology investigations on the space station,” said Scott Copeland of Boeing, and co-founder of Genes in Space. “This investigation could establish a foundation for using these viruses to treat bacterial infections in space, potentially decreasing the dependence on antibiotics.”
“Previous studies indicate that bacteria may display increased growth rates and virulence in space, while the antibiotics used to combat them may be less effective,” said Dr. Ally Huang, staff scientist at miniPCR bio. “Phages produced in space could have profound implications for human health, microbial control, and the sustainability of long-duration remote missions. Phage therapy tools also could revolutionize how we manage bacterial infections and microbial ecosystems on Earth.”
Edible organisms A purple, pre-incubation BioNutrients-3 bag, left, and a pink bag, right, which has completed incubation, on a purple and pink board used for comparison.NASASome vitamins and nutrients in foods and supplements lose their potency during prolonged storage, and insufficient intake of even a single nutrient can lead to serious diseases, such as a vitamin C deficiency, causing scurvy. The BioNutrients-3 experiment builds on previous investigations looking at ways to produce on-demand nutrients in space using genetically engineered organisms that remain viable for years. These include yogurt and a yeast-based beverage made from yeast strains previously tested aboard station, as well as a new, engineered co-culture that produces multiple nutrients in one sample bag.
“BioNutrients-3 includes multiple food safety features, including pasteurization to kill microorganisms in the sample and a demonstration of the feasibility of using a sensor called E-Nose that simulates an ultra-sensitive nose to detect pathogens,” said Kevin Sims, project manager at NASA’s Ames Research Center in California’s Silicon Valley.
Another food safety feature is a food-grade pH indicator to track bacterial growth.
“These pH indicators help the crew visualize the progress of the yogurt and kefir samples,” Sims said. “As the organisms grow, they generate lactic acid, which lowers the pH and turns the indicator pink.”
The research also features an investigation of yogurt passage, which seeds new cultures using a bit of yogurt from a finished bag, much like maintaining a sourdough bread starter. This method could sustain a culture over multiple generations, eliminating concerns about yogurt’s shelf life during a mission to the Moon or Mars while reducing launch mass.
Understanding cell division Cells of green algae dividing.University of ToyamaThe JAXA Plant Cell Division investigation examines how microgravity affects cell division in green algae and a strain of cultured tobacco cells. Cell division is a fundamental element of plant growth, but few studies have examined it in microgravity.
“The tobacco cells divide frequently, making the process easy to observe,” said Junya Kirima of JAXA. “We are excited to reveal the effects of the space environment on plant cell division and look forward to performing time-lapse live imaging of it aboard the space station.”
Understanding this process could support the development of better methods for growing plants for food in space, including on the Moon and Mars. This investigation also could provide insight to help make plant production systems on Earth more efficient.
For nearly 25 years, people have lived and worked continuously aboard the International Space Station, advancing scientific knowledge and conducting critical research for the benefit of humanity and our home planet. Space station research supports the future of human spaceflight as NASA looks toward deep space missions to the Moon under the Artemis campaign and in preparation for future human missions to Mars, as well as expanding commercial opportunities in low Earth orbit and beyond.
Learn more about the International Space Station at:
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NASA’s IXPE Imager Reveals Mysteries of Rare Pulsar
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Preparations for Next Moonwalk Simulations Underway (and Underwater)An international team of astronomers has uncovered new evidence to explain how pulsing remnants of exploded stars interact with surrounding matter deep in the cosmos, using observations from NASA’s IXPE (Imaging X-ray Polarimetry Explorer) and other telescopes.
Scientists based in the U.S., Italy, and Spain, set their sights on a mysterious cosmic duo called PSR J1023+0038, or J1023 for short. The J1023 system is comprised of a rapidly rotating neutron star feeding off of its low-mass companion star, which has created an accretion disk around the neutron star. This neutron star is also a pulsar, emitting powerful twin beams of light from its opposing magnetic poles as it rotates, spinning like a lighthouse beacon.
The J1023 system is rare and valuable to study because the pulsar transitions clearly between its active state, in which it feeds off its companion star, and a more dormant state, when it emits detectable pulsations as radio waves. This makes it a “transitional millisecond pulsar.”
An artist’s illustration depicting the central regions of the binary system PSR J1023+0038, including the pulsar, the inner accretion disc and the pulsar wind. Credit: Marco Maria Messa, University of Milan/INAF-OAB; Maria Cristina Baglio, INAF-OAB“Transitional millisecond pulsars are cosmic laboratories, helping us understand how neutron stars evolve in binary systems,” said researcher Maria Cristina Baglio of the Italian National Institute of Astrophysics (INAF) Brera Observatory in Merate, Italy, and lead author of a paper in The Astrophysical Journal Letters illustrating the new findings.
The big question for scientists about this pulsar system was: Where do the X-rays originate? The answer would inform broader theories about particle acceleration, accretion physics, and the environments surrounding neutron stars across the universe.
The source surprised them: The X-rays came from the pulsar wind, a chaotic stew of gases, shock waves, magnetic fields, and particles accelerated near the speed of light, that hits the accretion disk.
To determine this, astronomers needed to measure the angle of polarization in both X-ray and optical light. Polarization is a measure of how organized light waves are. They looked at X-ray polarization with IXPE, the only telescope capable of making this measurement in space, and comparing it with optical polarization from the European Southern Observatory’s Very Large Telescope in Chile. IXPE launched in Dec. 2021 and has made many observations of pulsars, but J1023 was the first system of its kind that it explored.
NASA’s NICER (Neutron star Interior Composition Explorer) and Neil Gehrels Swift Observatory provided valuable observations of the system in high-energy light. Other telescopes contributing data included the Karl G. Jansky Very Large Array in Magdalena, New Mexico.
The result: scientists found the same angle of polarization across the different wavelengths.
“That finding is compelling evidence that a single, coherent physical mechanism underpins the light we observe,” said Francesco Coti Zelati of the Institute of Space Sciences in Barcelona, Spain, co-lead author of the findings.
This interpretation challenges the conventional wisdom about neutron star emissions of radiation in binary systems, the researchers said. Previous models had indicated that the X-rays come from the accretion disk, but this new study shows they originate with the pulsar wind.
“IXPE has observed many isolated pulsars and found that the pulsar wind powers the X-rays,” said NASA Marshall astrophysicist Philip Kaaret, principal investigator for IXPE at NASA’s Marshall Space Flight Center in Huntsville, Alabama. “These new observations show that the pulsar wind powers most of the energy output of the system.”
Astronomers continue to study transitional millisecond pulsars, assessing how observed physical mechanisms compare with those of other pulsars and pulsar wind nebulae. Insights from these observations could help refine theoretical models describing how pulsar winds generate radiation – and bring researchers one step closer, Baglio and Coti Zelati agreed, to fully understanding the physical mechanisms at work in these extraordinary cosmic systems.
More about IXPE
IXPE, which continues to provide unprecedented data enabling groundbreaking discoveries about celestial objects across the universe, is a joint NASA and Italian Space Agency mission with partners and science collaborators in 12 countries. IXPE is led by NASA’s Marshall Space Flight Center in Huntsville, Alabama. BAE Systems, Inc., headquartered in Falls Church, Virginia, manages spacecraft operations together with the University of Colorado’s Laboratory for Atmospheric and Space Physics in Boulder. Learn more about IXPE’s ongoing mission here:
Share Details Last Updated Jul 15, 2025 EditorBeth RidgewayContactCorinne M. Beckingercorinne.m.beckinger@nasa.govLocationMarshall Space Flight Center Related Terms Explore More 6 min read Smarter Searching: NASA AI Makes Science Data Easier to FindImagine shopping for a new pair of running shoes online. If each seller described them…
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Helio Highlights: June 2025
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Helio Highlights: June 2025 4 Min Read Helio Highlights: June 2025 An artist’s interpretation of the Parker Solar Probe flying through the corona. Credits:NASA Two Stars in Solar Science
It takes a lot of work to make space missions happen. Hundreds or even thousands of experts work as a team to put together the spacecraft. Then it has to be tested in conditions similar to space, to be sure that it can survive out there once it is launched. Fixing big issues that pop up after launch is either impossible or very difficult, so it is important that everything works before the mission gets to space.
The Parker Solar Probe and Solar Orbiter missions study the Sun from different points of view. Parker is led by NASA and was built to fly into the upper atmosphere of the Sun, called the corona. Solar Orbiter is led by the European Space Agency (ESA) and has gotten our first peek at the Sun’s poles. Together, they both provide a deeper understanding of the Sun and how it affects the rest of the solar system.
A New Way of SeeingIt takes a lot of teamwork to build and launch any space mission, and Solar Orbiter was no different. It also had to go through a lot of testing in conditions similar to outer space before it made its final journey to the launch site.
The Solar Orbiter mission has taken the highest-ever-resolution images of the Sun and recently sent back the first ever close-up images of the Sun’s poles. It has also studied the solar wind to see what it is made of and helped scientists find out where on the Sun the solar wind comes from. Working hand-in-hand with Parker, it has also shown how the solar wind gets a magnetic “push” that increases its total speed.
An infographic showing the ten scientific instruments carried aboard Solar Orbiter European Space AgencyTo get all of this done, the spacecraft carries ten different scientific instruments on its voyage around the Sun. These instruments work together to provide a total overview of our star. Six of them are remote-sensing instruments (above in gold), which “see” the Sun and return imagery to Earth. The other four are what’s called in-situ instruments (above in pink), which measure the environment all around the spacecraft. This includes the solar wind, and the electric and magnetic fields embedded within it.
Faster and Closer Than Ever BeforeThe Parker Solar Probe was named for Dr. Eugene N. Parker, who pioneered our modern understanding of the Sun. In the mid-1950s, Parker developed a theory that predicted the solar wind. The probe named after him is designed to swoop within 4 million miles (6.5 million kilometers) of the Sun’s surface to trace its energy flow, to study the heating of the corona, and to explore what accelerates the solar wind.
To get all this done, the probe has to survive the blazing hot corona. It can get up to about 2 million °F (1.1 million °C)! Parker uses high-tech thermal engineering to protect itself, including an eight-foot diameter heat shield called the Thermal Protection System (TPS). The TPS is made of two panels of carbon composite with a lightweight 4.5-inch-thick carbon foam core. This heat shield sandwich keeps things about 85 °F (29 °C) in its shadow, even though the Sun-facing side reaches about 2,500 °F (1,377 °C)!
In 2018, the Parker Solar Probe became the fastest spacecraft ever built, at about 430,000 miles per hour (700,000 kilometers per hour). It also got seven times closer to the Sun than any other spacecraft, getting within 3.8 million miles (6.2 million kilometers). It made this record-breaking close encounter on Christmas Eve of 2024.
From Yesterday to TomorrowThe Parker Solar Probe was launched on August 12, 2018, and Solar Orbiter was launched on February 10, 2020. Both of them took off from Cape Canaveral Air Station in Florida. Some pieces of Solar Orbiter were transported in trucks, but the completed spacecraft made the journey from Europe to the U.S. on a gigantic Antonov cargo plane designed especially for transporting spacecraft.
Together, these spacecraft have done a lot to improve our knowledge of the Sun. Both missions are currently in their main operational phase, with projected end-of-mission sometime in 2026, and could continue returning data for a few years to come.
Additional Resources Lesson Plans & Educator Guides NASA Helio ClubLesson Plan
A collection of six lessons created for a middle-school audience that introduce basic heliophysics concepts.
Interactive Resources Build A Model Solar
Probe Activity
A hands-on guide showing students how to construct a homemade model of the Parker Solar Probe.
Webinars & Slide Decks Parker’s Perihelion
The Parker Solar Probe mission is the first spacecraft to “touch” the Sun, and made its closest approach in late 2024.
How will Parker Solar Probe study the Sun?
A slide deck with resources explaining how the Parker Solar Probe can study the Sun and survive.
Exploring the Sun with Solar Orbiter Video
A video conversation about the Solar Orbiter mission with NASA scientist Dr. Teresa Nieves-Chinchilla.
One Survey by NASA’s Roman Could Unveil 100,000 Cosmic Explosions
Scientists predict one of the major surveys by NASA’s upcoming Nancy Grace Roman Space Telescope may reveal around 100,000 celestial blasts, ranging from exploding stars to feeding black holes. Roman may even find evidence of some of the universe’s first stars, which are thought to completely self-destruct without leaving any remnant behind.
This simulation showcases the dynamic universe as NASA’s Nancy Grace Roman Space Telescope could see it over the course of its five-year primary mission. The video sparkles with synthetic supernovae from observations of the OpenUniverse simulated universe taken every five days (similar to the expected cadence of Roman’s High-Latitude Time-Domain Survey, which OpenUniverse simulates in its entirety). On top of the static sky of stars in the Milky Way and other galaxies, more than a million exploding stars flare into visibility and then slowly fade away. To highlight the dynamic physics happening and for visibility at this scale, the true brightness of each transient event has been magnified by a factor of 10,000 and no background light has been added to the simulated images. The video begins with Roman’s full field of view, which represents a single pointing of Roman’s camera, and then zooms into one square.Credit: NASA’s Goddard Space Flight Center and M. TroxelCosmic explosions offer clues to some of the biggest mysteries of the universe. One is the nature of dark energy, the mysterious pressure thought to be accelerating the universe’s expansion.
“Whether you want to explore dark energy, dying stars, galactic powerhouses, or probably even entirely new things we’ve never seen before, this survey will be a gold mine,” said Benjamin Rose, an assistant professor at Baylor University in Waco, Texas, who led a study about the results. The paper is published in The Astrophysical Journal.
Called the High-Latitude Time-Domain Survey, this observation program will scan the same large region of the cosmos every five days for two years. Scientists will stitch these observations together to create movies that uncover all sorts of cosmic fireworks.
Chief among them are exploding stars. The survey is largely geared toward finding a special class of supernova called type Ia. These stellar cataclysms allow scientists to measure cosmic distances and trace the universe’s expansion because they peak at about the same intrinsic brightness. Figuring out how fast the universe has ballooned during different cosmic epochs offers clues to dark energy.
This infographic describes the High-Latitude Time-Domain Survey that will be conducted by NASA’s Nancy Grace Roman Space Telescope. The survey’s main component will cover over 18 square degrees — a region of sky as large as 90 full moons — and see supernovae that occurred up to about 8 billion years ago. Smaller areas within the survey will pierce even farther, potentially back to when the universe was around a billion years old. The survey will be split between the northern and southern hemispheres, located in regions of the sky that will be continuously visible to Roman. The bulk of the survey will consist of 30-hour observations every five days for two years in the middle of Roman’s five-year primary mission.Credit: NASA’s Goddard Space Flight CenterIn the new study, scientists simulated Roman’s entire High-Latitude Time-Domain Survey. The results suggest Roman could see around 27,000 type Ia supernovae—about 10 times more than all previous surveys combined.
Beyond dramatically increasing our total sample of these supernovae, Roman will push the boundaries of how far back in time we can see them. While most of those detected so far occurred within approximately the last 8 billion years, Roman is expected to see vast numbers of them earlier in the universe’s history, including more than a thousand that exploded more than 10 billion years ago and potentially dozens from as far back as 11.5 billion years. That means Roman will almost certainly set a new record for the farthest type Ia supernova while profoundly expanding our view of the early universe and filling in a critical gap in our understanding of how the cosmos has evolved over time.
“Filling these data gaps could also fill in gaps in our understanding of dark energy,” Rose said. “Evidence is mounting that dark energy has changed over time, and Roman will help us understand that change by exploring cosmic history in ways other telescopes can’t.”
But type Ia supernovae will be hidden among a much bigger sample of exploding stars Roman will see once it begins science operations in 2027. The team estimates Roman will also spot about 60,000 core-collapse supernovae, which occur when a massive star runs out of fuel and collapses under its own weight.
That’s different from type Ia supernovae, which originate from binary star systems that contain at least one white dwarf — the small, hot core remnant of a Sun-like star — siphoning material from a companion star. Core-collapse supernovae aren’t as useful for dark energy studies as type Ias are, but their signals look similar from halfway across the cosmos.
“By seeing the way an object’s light changes over time and splitting it into spectra — individual colors with patterns that reveal information about the object that emitted the light—we can distinguish between all the different types of flashes Roman will see,” said Rebekah Hounsell, an assistant research scientist at the University of Maryland-Baltimore County working at NASA’s Goddard Space Flight Center in Greenbelt, Maryland and a co-author of the study.
“With the dataset we’ve created, scientists can train machine-learning algorithms to distinguish between different types of objects and sift through Roman’s downpour of data to find them,” Hounsell added. “While searching for type Ia supernovae, Roman is going to collect a lot of cosmic ‘bycatch’—other phenomena that aren’t useful to some scientists, but will be invaluable to others.”
Hidden Gems
Thanks to Roman’s large, deep view of space, scientists say the survey should also unearth extremely rare and elusive phenomena, including even scarcer stellar explosions and disintegrating stars.
Upon close approach to a black hole, intense gravity can shred a star in a so-called tidal disruption event. The stellar crumbs heat up as they swirl around the black hole, creating a glow astronomers can see from across vast stretches of space-time. Scientists think Roman’s survey will unveil 40 tidal disruption events, offering a chance to learn more about black hole physics.
The team also estimates Roman will find about 90 superluminous supernovae, which can be 100 times brighter than a typical supernova. They pack a punch, but scientists aren’t completely sure why. Finding more of them will help astronomers weigh different theories.
Even rarer and more powerful, Roman could also detect several kilonovae. These blasts occur when two neutron stars — extremely dense cores leftover from stars that exploded as supernovae — collide. To date, there has been only one definitive kilonova detection. The team estimates Roman could spot five more.
This artist’s concept visualizes a kilonova – an explosion that happens when two neutron stars or a neutron star and a black hole collide and merge. When these collisions happen, a fraction of the resulting debris is ejected as jets, which move near the speed of light. The remaining debris produces hot, glowing, neutron-rich clouds that forge heavy elements, like gold and platinum. Researchers will mine data from NASA’s Nancy Grace Roman Space Telescope, which will survey the same areas of the sky every few days, to identify kilonovae. Roman’s extensive data will help astronomers better identify how often these events occur, how much energy they give off, and how near or far they are.Credit: NASA, ESA, J. Olmsted (STScI)That would help astronomers learn much more about these mysterious events, potentially including their fate. As of now, scientists are unsure whether kilonovae result in a single neutron star, a black hole, or something else entirely.
Roman may even spot the detonations of some of the first stars that formed in the universe. These nuclear furnaces were giants, up to hundreds of times more massive than our Sun, and unsullied by heavy elements that hadn’t yet formed.
They were so massive that scientists think they exploded differently than modern massive stars do. Instead of reaching the point where a heavy star today would collapse, intense gamma rays inside the first stars may have turned into matter-antimatter pairs (electrons and positrons). That would drain the pressure holding the stars up until they collapsed, self-destructing in explosions so powerful they’re thought to leave nothing behind.
So far, astronomers have found about half a dozen candidates of these “pair-instability” supernovae, but none have been confirmed.
“I think Roman will make the first confirmed detection of a pair-instability supernova,” Rose said — in fact the study suggests Roman will find more than 10. “They’re incredibly far away and very rare, so you need a telescope that can survey a lot of the sky at a deep exposure level in near-infrared light, and that’s Roman.”
A future rendition of the simulation could include even more types of cosmic flashes, such as variable stars and active galaxies. Other telescopes may follow up on the rare phenomena and objects Roman discovers to view them in different wavelengths of light to study them in more detail.
“Roman’s going to find a whole bunch of weird and wonderful things out in space, including some we haven’t even thought of yet,” Hounsell said. “We’re definitely expecting the unexpected.”
For more information about the Roman Space Telescope visit www.nasa.gov/roman.
The Nancy Grace Roman Space Telescope is managed at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, with participation by NASA’s Jet Propulsion Laboratory in Southern California; Caltech/IPAC in Pasadena, California; the Space Telescope Science Institute in Baltimore; and a science team comprising scientists from various research institutions. The primary industrial partners are BAE Systems Inc. in Boulder, Colorado; L3Harris Technologies in Rochester, New York; and Teledyne Scientific & Imaging in Thousand Oaks, California.
By Ashley Balzer
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Fourth NASA-Enabled Private Flight to Space Station Completes Safely
The NASA-supported fourth private astronaut mission to the International Space Station, Axiom Mission 4, completed its flight as part of the agency’s efforts to demonstrate demand and build operational knowledge for future commercial space stations.
The four-person crew safely returned to Earth, splashing down off the coast of California at 5:31 a.m. EDT on Tuesday, aboard a SpaceX Dragon spacecraft. Teams aboard SpaceX recovery vessels retrieved the spacecraft and astronauts.
Peggy Whitson, former NASA astronaut and director of human spaceflight at Axiom Space, ISRO (Indian Space Research Organization) astronaut Shubhanshu Shukla, and ESA (European Space Agency) project astronaut Sławosz Uznański-Wiśniewski of Poland, and Hungarian to Orbit (HUNOR) astronaut Tibor Kapu of Hungary, completed about two and a half weeks in space.
The Axiom Mission 4 crew launched at 2:31 a.m. on June 25, on a Falcon 9 rocket from NASA’s Kennedy Space Center in Florida. Approximately 28 hours later, Dragon docked to the space-facing port of the space station’s Harmony module. The astronauts undocked at 7:15 a.m. on July 14, to begin the trip home.
The crew conducted microgravity research, educational outreach, and commercial activities. The spacecraft will return to Florida for inspection and processing at SpaceX’s refurbishing facilities. Throughout their mission, the astronauts conducted about 60 science experiments, and returned science, including NASA cargo, back to Earth.
A collaboration between NASA and ISRO allowed Axiom Mission 4 to deliver on a commitment highlighted by President Trump and Indian Prime Minister Narendra Modi to send the first ISRO astronaut to the station. The space agencies participated in five joint science investigations and two in-orbit science, technology, engineering, and mathematics demonstrations. NASA and ISRO have a long-standing relationship built on a shared vision to advance scientific knowledge and expand space collaboration.
The private mission also carried the first astronauts from Poland and Hungary to stay aboard the space station.
The International Space Station is a springboard for developing a low Earth orbit economy. NASA’s goal is to achieve a strong economy off the Earth where the agency can purchase services as one of many customers to meet its science and research objectives in microgravity. NASA’s commercial strategy for low Earth orbit provides the government with reliable and safe services at a lower cost, enabling the agency to focus on Artemis missions to the Moon in preparation for Mars while also continuing to use low Earth orbit as a training and proving ground for those deep space missions.
Learn more about NASA’s commercial space strategy at:
https://www.nasa.gov/commercial-space
News Media Contacts:
Claire O’Shea
Headquarters, Washington
202-358-1100
claire.a.o’shea@nasa.gov
Anna Schneider
Johnson Space Center, Houston
281-483-5111
anna.c.schneider@nasa.gov
Melissa Harris: Shaping NASA’s Vision for a Future in Low Earth Orbit
With over 25 years of experience in human spaceflight programs, Melissa Harris has contributed to numerous programs and projects during key moments in NASA’s history. As the life cycle lead and Independent Review Team review manager for the Commercial Low Earth Orbit Development Program, she guides the agency through development initiatives leading to a new era of space exploration.
Harris grew up near NASA’s Johnson Space Center in Houston and spent time exploring the center and trying on astronaut helmets. She later earned her bachelor’s degree in legal studies from the University of Houston, master and subject matter expert certifications in configuration management, and ISO 9001 Lead Auditors Certification. When the opportunity arose, she jumped at the chance to join the International Space Station Program.
Harris (right) and her twin sister, Yvonne (left), at the Artemis I launch. Image courtesy of Melissa HarrisStarting as a board specialist, Harris spent eight years supporting the space station program boards, panels, and flight reviews. Other areas of support included the International Space Station Mission Evaluation Room and the EVA Crew Systems and Robotics Division managing changes for the acquisition and building of mockups in the Neutral Buoyancy Laboratory and Space Vehicle Mockup Facility in Houston. She then took a leap to join the Constellation Program, developing and overseeing program and project office processes and procedures. Harris then transitioned to the Extravehicular Activity (EVA) Project Office where she was a member of the EVA 23 quality audit team tasked with reviewing data to determine the cause of an in-orbit failure. She also contributed to the Orion Program and Artemis campaign. After spending two years at Axiom Space, Harris returned to NASA and joined the commercial low Earth orbit team.
Harris said the biggest lesson she has learned during her career is that “there are always ups and downs and not everything works out, but if you just keep going and at the end of the day see that the hard work and dedication has paid off, it is always the proudest moment.”
Her dedication led to a nomination for the Stellar Award by the Rotary National Award for Space Achievement Foundation.
Harris and her son, Tyler, at the Rotary National Award Banquet in 2024.Image courtesy of Melissa HarrisHarris’ favorite part of her role at NASA is working “closely with brilliant minds” and being part of a dedicated and hard-working team that contributes to current space programs while also planning for future programs. Looking forward, she anticipates witnessing the vision and execution of a self-sustaining commercial market in low Earth orbit come to fruition.
Outside of work, Harris enjoys being with family, whether cooking on the back porch, over a campfire, or traveling both in and out of the country. She has been married for 26 years to her high school sweetheart, Steve, and has one son, Tyler. Her identical twin sister, Yvonne, also works at Johnson.
Harris and her twin sister Yvonne dressed as Mark and Scott Kelly for Halloween in 2024.Image courtesy of Melissa HarrisLearn more about NASA’s Commercial Low Earth Orbit Development Program at:
Curiosity Blog, Sols 4595-4596: Just Another Beautiful Day on Mars
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Curiosity Blog, Sols 4595-4596: Just Another Beautiful Day on Mars NASA’s Mars rover Curiosity acquired this image using its Left Navigation Camera on July 9, 2025 — Sol 4594, or Martian day 4,594 of the Mars Science Laboratory mission — at 11:03:48 UTC. NASA/JPL-CaltechWritten by Ashley Stroupe, Mission Operations Engineer at NASA’s Jet Propulsion Laboratory
Earth planning date: Wednesday, July 9, 2025
In today’s plan, we have a little bit of everything. With it being winter still, we are taking advantage of the ability to let the rover sleep in, doing most of the activities in the afternoon when it is warmer and we need less heating. As the Systems Engineer (Engineering Uplink Lead) today, I sequenced the needed heating and some other engineering housekeeping activities.
We start off with an extensive remote science block with Mastcam imaging of a nearby trough to look for potential sand activity. There is color imaging of a displaced block, “Ouro,” near a circular depression — could this be a small crater? Mastcam also takes a look at a ridge “Volcán Peña Blanca” to look at the sedimentary structures, which may provide insights into its formation. ChemCam LIBS and Mastcam team up to look at the “Los Andes” target, which is the dark face of a nearby piece of exposed bedrock. ChemCam RMI and Mastcam check out a distant small outcrop to examine the geometry of the layers. We also throw in environmental observations, a Mastcam solar Tau and a Navcam line-of-site looking at dust in the atmosphere. After a nap, Curiosity will be doing some contact science activities on “Cataratas del Jardín” and “Rio Ivirizu” bedrock targets. Looking at two nearby targets for variability can help us understand the local geology. Cataratas del Jardín gets a brushing to clear away the dust before both targets are examined by MAHLI and APXS. Fortunately for the Arm Rover Planner, both of these targets are fairly flat and easy to reach. Before going to sleep for the night, Curiosity will stow the arm to be ready for driving on the next sol.On the second sol, there is more remote science. ChemCam LIBS and Mastcam will examine “Torotoro,” another piece of layered bedrock. ChemCam RMI will take a mosaic of “Paniri,” which is an interesting incision in the rock that is filled with another material. There are also environmental observations, a Navcam dust devil survey and a suprahorizon movie. After another nap, Curiosity is getting on the road. We’re heading southwest (direction shown in the image) about 50 meters (about 164 feet), but we need to sneak between sandy pits and skirt around some terrain that we can’t see behind. The terrain here provides pretty nice driving, though, without a lot of big boulders, steep slopes, or pointy rocks that can poke holes in our wheels. After the standard post-drive imaging for our next plan, there are some Navcam observations to look for clouds and our normal look under the rover with MARDI before Curiosity goes to sleep for the night.
For more Curiosity blog posts, visit MSL Mission Updates
Learn more about Curiosity’s science instruments
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Linking Satellite Data and Community Knowledge to Advance Alaskan Snow Science
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Linking Satellite Data and Community Knowledge to Advance Alaskan Snow ScienceSeasonal snow plays a significant role in global water and energy cycles, and billions of people worldwide rely on snowmelt for water resources needs, including water supply, hydropower, agriculture, and more. Monitoring snow water equivalent (SWE) is critical for supporting these applications and for mitigating damages caused by snowmelt flooding, avalanches, and other snow-related disasters. However, our ability to measure SWE remains a challenge, particularly in northern latitudes where in situ SWE observations are sparse and satellite observations are impacted by the boreal forest and environmental conditions. Despite limited in situ SWE measurements, local residents in Arctic and sub-Arctic regions provide a vast and valuable body of place-based knowledge and observations that are essential for understanding snowpack behavior in northern regions.
As part of a joint NASA SnowEx, NASA’s Minority University Research and Education Project (MUREP) for American Indian and Alaska Native STEM (Science, Technology, Engineering, & Mathematics) Engagement (MAIANSE), and Global Learning & Observations to Benefit the Environment (GLOBE) Program partnership, a team of scientists including NASA intern Julia White (NASA Goddard Space Flight Center, University of Alaska Fairbanks), Carrie Vuyovich (NASA Goddard Space Flight Center), Alicia Joseph (NASA Goddard Space Flight Center), and Christi Buffington (University of Alaska Fairbanks, GLOBE Implementation Office) is studying snow water equivalent (SWE) across Interior Alaska. This project combines satellite-based interferometric synthetic aperture radar (InSAR) data, primarily from the Sentinel-1 satellite, with ground-based observations from the Snow Telemetry (SNOTEL) network and GLOBE (Global Learning Observations to Benefit the Environment). Together, these data sources help the team investigate how SWE varies across the landscape and how it affects local ecosystems and communities. The team is also preparing for future integration of data from NASA’s upcoming NISAR (NASA ISRO Synthetic Aperture Radar) mission, which is expected to enhance SWE retrieval capabilities.
After a collaborative visit to the classroom of Tammie Kovalenko in November 2024, Delta Junction junior and senior high school students in vocational agriculture (Vo Ag) classes, including members of Future Farmers of America (FFA), began collecting GLOBE data on a snowdrift located just outside their classroom. As the project progressed, students developed their own research questions. One student, Fianna Rooney, took the project even further — presenting research posters at both the GLOBE International Virtual Science Symposium (IVSS) and both the FFA Regional and National Conventions. Her work highlights the growing role of Alaskan youth in science, and how student-led inquiry can enrich both education and research outcomes. (This trip was funded by the NASA Science Activation Program’s Arctic and Earth SIGNs – STEM Integrating GLOBE & NASA – project at the University of Alaska Fairbanks.)
In February 2025, the team collaborated with Delta Junction Junior High and High School students, along with the Delta Junction Trails Association, to conduct a GLOBE Intensive Observation Period (IOP), “Delta Junction Snowdrifts,” to collect Landcover photos, snow depth, and snow water equivalent data. Thanks to aligned interests and research goals at the Alaska Satellite Facility (ASF), the project was further expanded into Spring 2025. Collaborators from ASF and the Alaska Center for Unmanned Aircraft Systems Integration (ACUASI) collected high resolution airborne data over the snowdrift at the Delta Junction Junior and Senior High School. This complementary dataset helped strengthen connections between satellite observations and ground-based student measurements.
This effort, led by a NASA intern, scientists, students, and Alaskan community members, highlights the power of collaboration in advancing science and education. Next steps will include collaboration with Native Alaskan communities near Delta Junction, including the Healy Lake Tribe, whose vast, generational knowledge will be of great value to deepening our understanding of Alaskan snow dynamics.
Learn more about how NASA’s Science Activation program connects NASA science experts, real content, and experiences with community leaders to do science in ways that activate minds and promote deeper understanding of our world and beyond: https://science.nasa.gov/learn/about-science-activation/
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Image credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Alex Parker
Chief Training Officer Teresa Sindelar Touches the Future of Human Spaceflight
Teresa Sindelar always knew she wanted to be a part of human spaceflight, but she was unsure how to make that dream a reality until a chance encounter with former NASA astronaut Tom Stafford when she was 11 years old.
The pair met in a local jewelry shop near Sindelar’s Nebraska home, where Gen. Stafford was signing autographs. In addition to his photo, Gen. Stafford gave Sindelar a valuable tip – she should check out the Kansas Cosmosphere, a space museum in Hutchinson, Kansas. “I proceeded to attend every camp the Cosmosphere offered as a student, interned during college, and worked there full time while earning my graduate degree,” Sindelar said.
Official portrait of Teresa Sindelar.NASAShe discovered a passion for teaching and mentoring young students through her work in the museum’s education department and a stint as a high school science teacher. When she began looking for opportunities at NASA, she sought a position that melded instruction with technical work. “I like pouring into others and watching them grow,” she said.
Today, Sindelar is a chief training officer (CTO) within the Flight Operations Directorate at NASA’s Johnson Space Center in Houston. Along with her fellow CTOs, Sindelar oversees the correct and complete training of NASA astronauts, crew members representing international partners, and all flight controllers. “I put the pieces together,” she said. “It is my job to make sure instructors, schedulers, outside partners, facility managers, and others are all in sync.” She added that CTOs have a unique position because they see the big picture of a training flow and understand the long-term training goals and objectives.
Teresa Sindelar received a 2025 Space Flight Awareness Program Honoree Award, presented by NASA astronaut Randy Bresnik.NASA“I get to do a lot of cool things and go to a lot of cool places,” she said, noting that the training facilities at Johnson and other NASA centers, as well as facilities managed by international partners, are top-notch. While she does enjoy watching astronauts work through problems and learn new systems, she has a special fondness for flight controller training and mentoring young professionals. “What fills my cup the most is seeing a brand-new employee right out of college blossom into a confident flight controller, do their job well, and make our missions better,” she said. “I like knowing that I had something to do with that.”
Sindelar has been part of the Johnson team since 2010 and worked as an educator in what was then called the center’s Office of Education and as a crew training instructor in the Space Medicine Operations Directorate before becoming a CTO. In March 2025, Sindelar received a Space Flight Awareness Program Honoree Award for her outstanding leadership in the Private Astronaut Mission (PAM) program, which is an important component of NASA’s strategy for enabling a robust and competitive commercial economy in low Earth orbit. As the lead CTO for the third PAM, Axiom Mission 3, Sindelar managed training while identifying critical inefficiencies, enhancing mission safety and performance. She spearheaded a key stakeholder retreat to streamline operations, reorganized training resources for improved accessibility, and implemented efficiency improvements that optimized mission support. Sindelar’s work was recognized during an award ceremony at NASA’s Kennedy Space Center in Florida, and she got to attend the launch of NASA’s SpaceX Crew-10 mission as a special guest.
In her 15 years with the agency, she has learned the importance of leading by example. “My team needs to see that I meet the bar I set,” she said. “Leading is about motivating your people so they are committed, not just compliant.”
Teresa Sindelar (front row, third from left) and her Space Medicine Operations crew training team with the crew members of Expedition 48.NASAKeeping a team motivated and on track is particularly important to training success and safety. “We only get a matter of months to train astronauts to do the most hazardous activities that humans have done, or to train flight controllers who literally have the mission and the lives of astronauts in their hands,” Sindelar said, adding that they cannot afford to have an unfocused or indifferent team.
Sindelar observed that Johnson’s training team is acutely aware of their responsibilities. “We live and work in the same communities as the crew members,” she said. “We see them at school functions, at the grocery store, at the park. We know their families are counting on us to bring their loved ones home safely.”
She has also learned that her voice matters. “When I was a young professional, I just never felt I could be influential, but the only person holding me back was me,” she said. “I had to learn to trust in my own instincts. That was definitely outside of my comfort zone.” She credits her mentors with helping her build confidence and knowing when and how to speak up. “I have had many giants of the spaceflight community mold and shape me in my career, from my counselors at the Cosmosphere all the way to flight directors and astronauts,” she said. “It is my privilege to learn from them, and I am grateful to each of them.”
Outside of work, Sindelar uses her voice in a different way – as part of her church choir. She also plays piano, stating that she is as passionate about music and volunteerism as she is about human spaceflight. She is a member of the Friendswood Volunteer Fire Department, as well, serving on its rehab team and as the department’s chaplain
Teresa Sindelar (second from right) and her family with a Friendswood Volunteer Fire Department fire engine. Image courtesy of Teresa SindelarAs NASA prepares to return humans to the Moon and journey on to Mars, Sindelar hopes she has taught the next generation of explorers enough so they can show the world the wonders of the universe. “This next generation will see and do things my generation never even thought of,” she said, adding that it is time for them to start leading. “Use your voice. Take care of each other along the way. Reach out and help the next one in line.”
Sindelar keeps a reminder of that important message on her desk: the picture Gen. Stafford signed all those years ago.
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Preparations for Next Moonwalk Simulations Underway (and Underwater) NASA’s Mariner 4 captured the first-ever close-up image of Mars on July 14, 1965. While waiting for the data to be processed into the image (inset at right), team members hand-colored strips of paper that the data was printed on, assigning hues to value ranges. The result is on display at JPL.NASA/JPL-CaltechSixty years ago, NASA’s Mariner 4 captured groundbreaking views of the Red Planet, leading to a steady stream of advances in the cameras used to study other worlds.
In 1965, NASA’s Mariner 4 mission brought Mars into American living rooms, where TV sets showed fuzzy black-and-white images of a cratered landscape. The spacecraft took 21 complete pictures — the first ever captured of another planet — as it flew by as close as 6,118 miles (9,846 kilometers) above the surface.
The mission team couldn’t wait to see what the camera aboard the spacecraft would return. When the actual images were delayed, they went so far as to create a color-by-numbers image, assigning hues to specific values in the data.
Their handiwork wasn’t far off, and the barren landscape Mariner 4 captured ignited the imaginations of future scientists and engineers who would go on to work on a succession of missions, each revealing Mars in a way it had never been seen before.
Millions of Mars images have been taken since then, many of which are captivating in their own way. The images that follow highlight some of the “firsts” in the way the agency has used imaging to help unlock the secrets of Mars.
Viking 1 Sets Foot on MarsJuly 20, 1976
This historic image — the first from the surface of Mars — confirmed that NASA’s Viking 1 lander had become the first spacecraft to touch down on the Red Planet on July 20, 1976. NASA/JPL-CaltechViking 1 became the first spacecraft to touch down on Mars on July 20, 1976. The first high-resolution image it sent to Earth captured a dry, rocky landscape that dashed any hope among scientists of discovering life on the surface. But the crisp images that followed from the lander’s 360-degree cylindrical scan camera underscored the scientific value of seeing Mars from the ground and generated excitement for a more ambitious visit: a robotic spacecraft that could drive across this alien world.
Portrait of Mars by Viking 1 Orbiter1980
NASA’s twin Viking landers didn’t travel alone. Two accompanying orbiters circled Mars to study it from above. The Viking 1 orbiter captured many images in 1980 that were combined to produce this view of Valles Marineris, the “Grand Canyon of Mars.”NASA/JPL-Caltech/USGSWhen the twin Viking landers arrived at Mars, each descended from an orbiter that used cameras to map Mars in a way Earth-based telescopes couldn’t. They began capturing images before the landers even touched down, continuing until 1980. That year, the Viking 1 orbiter captured images that were later stitched into a defining portrait of Valles Marineris — the “Grand Canyon of Mars.”
Sojourner Starts to ExploreJuly 5, 1997
The size of a microwave oven, NASA’s Sojourner rover was the first spacecraft to drive on Mars, as seen in this image taken by NASA’s Pathfinder lander on July 5, 1997. The rover explored the Martian surface for 83 days, well beyond its planned seven-day mission.NASA/JPL-CaltechBy the time NASA returned to the Martian surface in 1997 with the Pathfinder lander and its microwave-oven-size Sojourner rover, much had changed on Earth since Mariner 4’s images beamed to TV viewers: Now, the internet was bringing around-the-clock news to personal computers, allowing a young generation of space fans to witness the tentative first steps of a new form of planetary exploration. The panoramic images from the ground were the first since Viking and, as part of NASA’s “faster, better, cheaper” initiative, offered more detail and a comparatively lower cost.
Opportunity Spots Passing Dust DevilMarch 31, 2016
NASA’s Spirit and Opportunity rovers crossed many miles of Martian terrain, capturing stunning vistas and passing dust devils along the way. The twins far outlasted their planned mission of 90 days: Spirit traveled the Red Planet for more than six years, while Opportunity journeyed for almost 15.NASA/JPL-CaltechIn 2004, NASA’s golf-cart-size twin rovers Spirit and Opportunity set down on the Red Planet, beginning a new phase of Martian exploration. Equipped with both mast-mounted panoramic and arm-mounted microscopic imagers, the roving spacecraft let scientists, engineers, and the world discover new terrain each day. They captured colorful views of Martian vistas and revealed details of pebble-size “blueberries.” Mars was beginning to feel less like an unfamiliar world than a place with recognizable landmarks.
MRO’s HiRISE Views Victoria CraterJuly 18, 2009
More advanced orbiters have brought a different perspective of the Red Planet — especially NASA’s Mars Reconnaissance Orbiter, which uses its HiRISE camera to see surface features that appeared blurry in earlier images. Here, HiRISE views Victoria Crater.NASA/JPL-Caltech/University of ArizonaSince Viking, a series of increasingly advanced orbiters have arrived at Mars with new science tools and cameras. Using increasingly sophisticated imagers, they have mapped the planet’s hills and valleys, identified significant minerals, and found buried glaciers. A camera that has been in operation aboard NASA’s Mars Reconnaissance Orbiter since 2006, the High-Resolution Imaging Science Experiment (HiRISE) frequently captures individual dunes, boulders, and craters, as with this picture of Victoria Crater, revealing features that had been blurry in previous images. The camera has also identified landing sites and places where future rovers (perhaps even astronauts) could explore.
Curiosity, Perseverance Bring More Cameras and ColorAug. 5, 2012 and Feb. 18, 2021
Curiosity Perseverance NASA/JPL-Caltech NASA/JPL-Caltech CuriosityPerseverance NASA/JPL-Caltech NASA/JPL-Caltech Curiosity Perseverance More Cameras, More Color CurtainToggle2-Up Image Details NASA’s Curiosity and Perseverance rovers each brought more cameras — and more color — to the Martian surface. One example are the hazard-avoidance cameras, which are black-and-white on Curiosity, left, and higher-resolution color on Perseverance. NASA/JPL-CaltechBoth Curiosity and Perseverance arrived at Mars (in 2012 and 2021, respectively) loaded with cameras that pack millions of pixels into their images and peer farther into the distance than Spirit or Opportunity ever could. They also feature upgraded arm-mounted cameras for studying fine details like sand particles and rock textures. Perseverance took a step beyond Curiosity in several ways, including with high-speed cameras that showed its parachute deploying and its rocket-powered jetpack flying away during entry, descent, and landing on Mars. Another advance can be seen in each vehicle’s hazard-avoidance cameras, which help rover drivers spot rocks they might bump into. As seen in the first images each rover sent back, Curiosity’s black-and-white cameras were upgraded to color and higher resolution for Perseverance, providing clearer views of the surface.
Ingenuity Spots Perseverance at Belva CraterAug. 22, 2023
NASA’s Perseverance landed along with the Ingenuity helicopter, which proved flight in Mars’ thin atmosphere was possible. This view from Ingenuity — taken from an altitude of about 40 feet (12 meters) during its 51st flight — includes the rover, visible as a whitish speck at upper left.NASA/JPL-CaltechJust as Pathfinder brought the tiny Sojourner rover to Mars, NASA’s next-generation Perseverance rover carried the Ingenuity helicopter. Along with proving flight in Mars’ thin air was possible, Ingenuity used a commercial, off-the-shelf color camera to take aerial views over the course of 72 flights. During one of those flights, Ingenuity even spotted Perseverance in the distance — another first on the Red Planet. Future Mars helicopters might be able to scout paths ahead and find scientifically interesting sites for robots and astronauts alike.
More About These MissionsNASA JPL, which is managed for the agency by Caltech in Pasadena, California, built Mariner 4, the Viking 1 and 2 orbiters, Pathfinder, Sojourner, Spirit and Opportunity, Curiosity, Perseverance, and Ingenuity. It continues to operate Curiosity and Perseverance.
Lockheed Martin Space in Denver built MRO and supports its operations, while JPL manages the mission. The University of Arizona, in Tucson, operates HiRISE, which was built by BAE Systems, in Boulder, Colorado.
The Viking 1 and 2 landers were built by Martin Marietta; the Viking program was managed by NASA’s Langley Research Center in Hampton, Virginia. JPL led operations for the Viking landers and orbiters.
Mariner 4 Mars Flyby 60th Anniversary Media Reel News Media ContactsAndrew Good
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-2433
andrew.c.good@jpl.nasa.gov
Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
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NASA Astronaut Shannon Walker Retires
NASA astronaut Shannon Walker retired July 10, concluding a career that spanned 38 years, including 30 years of federal service and more than 21 years as an astronaut. During two spaceflights, she spent 330 days in orbit, contributing to hundreds of scientific experiments and technology demonstrations for the benefit of humanity.
Walker served as a mission specialist during NASA’s SpaceX Crew-1 mission to the International Space Station in 2020, the first crewed operational Dragon spacecraft flight. She also was the first woman to fly aboard a Dragon spacecraft. Once aboard the orbiting laboratory, Walker joined the Expedition 64/65 crew and briefly commanded Expedition 65, logging 167 days in space before returning to Earth in May 2021.
She spent 163 days in space during her first spaceflight in 2010 as a member of the space station’s Expedition 24/25 crew. She was the pilot of the Soyuz TMA-19, which became the first crew to dock with the station’s Rassvet module.
“Shannon’s dedication to human space exploration has left an incredible impact, not just here in Houston, but across the industry,” said Steve Koerner, acting director of NASA’s Johnson Space Center in Houston. “Her leadership and guidance will be missed immensely, but she leaves behind a legacy of excellence that will continue to inspire the next generation of explorers for decades to come.”
Most recently, Walker served as the deputy chief of the Astronaut Office. She also oversaw the 2021 class of astronaut candidates, supervising their training and graduation in 2024.
“Shannon and I were a part of the same astronaut class back when we first started,” said Joe Acaba, chief of the Astronaut Office at NASA Johnson. “She has been a great friend to me ever since and a great leader within the Astronaut Office. I could not imagine a better partner by my side when, nearly 20 years later, we’d become chief and deputy chief. She has undoubtedly been a positive influence on this office, and her retirement is well-deserved.”
Walker began her career as a flight controller in the Mission Control Center at NASA Johnson, supporting several shuttle missions. She next worked in the International Space Station Program Office, helping to develop, build, and integrate hardware for the space station. In the early days of the space station, she returned to mission control, leading the engineering team responsible for the space station’s technical health.
She was selected as an astronaut in 2004. After completing her initial two years of training, she served as a crew support astronaut and worked as a capsule communicator, or capcom. She also held leadership positions within the several branches of the Astronaut Office focused on International Space Station operations, crew Soyuz missions, and supporting astronauts with flight assignments. She also commanded the NASA Extreme Environment Mission Operations project, or NEEMO 15 underwater mission.
“I had always known I wanted to be an astronaut when I grew up, but looking back on the past 38 years, I never would have imagined how many adventures my career would take me on,” said Walker. “I feel fortunate to have been able to work with people all over the world in the pursuit of space exploration. I have seen a lot of change in the evolution of human spaceflight, and I know the future is in good hands with all the talented people we have here and the generations yet to come.”
The Houston native attended Rice University in her hometown, where she earned a bachelor’s degree in physics, followed by a master’s degree and doctorate in space physics.
Learn more about how NASA explores the unknown and innovates for the benefit of humanity at: https://www.nasa.gov/
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Chelsey Ballarte
Johnson Space Center, Houston
281-483-5111
Chelsey.n.ballarte@nasa.gov
Putting the X-59 to the Test
Researchers from NASA and the Japanese Aerospace Exploration Agency (JAXA) recently tested a scale model of the X-59 experimental aircraft in a supersonic wind tunnel located in Chofu, Japan, to assess the noise audible underneath the aircraft. The model can be seen in the wind tunnel in this image released on July 11, 2025.
The test was an important milestone for NASA’s one-of-a-kind X-59, which is designed to fly faster than the speed of sound without causing a loud sonic boom. When the X-59 flies, sound underneath it – a result of its pressure signature – will be a critical factor for what people hear on the ground.
This marked the third round of wind tunnel tests for the X-59 model, following a previous test at JAXA and at NASA’s Glenn Research Center in Cleveland. The data will help researchers understand the noise level that will be created by the shock waves the X-59 produces at supersonic speeds.
Image credit: JAXA
NASA to Provide Coverage of Axiom Mission 4 Departure from Station
NASA will provide live coverage of the undocking and departure of the Axiom Mission 4 private astronaut mission from the International Space Station.
The four-member astronaut crew is scheduled to undock from the space-facing port of the station’s Harmony module aboard the SpaceX Dragon spacecraft at approximately 7:05 a.m. EDT Monday, July 14, pending weather, to begin their return to Earth and splashdown off the coast of California.
Coverage of departure operations will begin with hatch closing at 4:30 a.m. on NASA+. Learn how to watch NASA content through a variety of platforms, including social media.
Peggy Whitson, former NASA astronaut and director of human spaceflight at Axiom Space, ISRO (Indian Space Research Organization) astronaut Shubhanshu Shukla, ESA (European Space Agency) project astronaut Sławosz Uznański-Wiśniewski of Poland, and HUNOR (Hungarian to Orbit) astronaut Tibor Kapu of Hungary, will have spent about two weeks in space at the conclusion of their mission.
The Dragon spacecraft will return with more than 580 pounds of cargo, including NASA hardware and data from over 60 experiments conducted throughout the mission.
NASA’s coverage is as follows (all times Eastern and subject to change based on real-time operations):
Monday, July 14
4:30 a.m. – Hatch closing coverage begins on NASA+.
4:55 a.m. – Crew enters spacecraft followed by hatch closing.
6:45 a.m. – Undocking coverage begins on NASA+, Axiom Space, and SpaceX channels.
7:05 a.m. – Undocking
NASA’s coverage ends approximately 30 minutes after undocking when space station joint operations with Axiom Space and SpaceX conclude. Axiom Space will resume coverage of Dragon’s re-entry and splashdown on the company’s website.
A collaboration between NASA and ISRO allowed Axiom Mission 4 to deliver on a commitment highlighted by President Trump and Indian Prime Minister Narendra Modi to send the first ISRO astronaut to the station. The space agencies participated in five joint science investigations and two in-orbit science, technology, engineering, and mathematics demonstrations. NASA and ISRO have a long-standing relationship built on a shared vision to advance scientific knowledge and expand space collaboration.
The private mission also carried the first astronauts from Poland and Hungary to stay aboard the space station.
The International Space Station is a springboard for developing a low Earth orbit economy. NASA’s goal is to achieve a strong economy off the Earth where the agency can purchase services as one of many customers to meet its science and research objectives in microgravity. NASA’s commercial strategy for low Earth orbit provides the government with reliable and safe services at a lower cost, enabling the agency to focus on Artemis missions to the Moon in preparation for Mars while also continuing to use low Earth orbit as a training and proving ground for those deep space missions.
Learn more about NASA’s commercial space strategy at:
https://www.nasa.gov/commercial-space
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Claire O’Shea
Headquarters, Washington
202-358-1100
claire.a.o’shea@nasa.gov
Anna Schneider
Johnson Space Center, Houston
281-483-5111
anna.c.schneider@nasa.gov
