“...all the past is but a beginning of a beginning, and that all that is and has been is but the twilight of dawn.”

— H.G. Wells
1902

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Deepening stirling engine analysis: optimized model offers more accurate performance predictions

Universe Today - Tue, 07/22/2025 - 9:02pm

A Chinese team presents a new model for accurately predicting the performance of Sterling engines, which are being investigated as a possible means of powering

Categories: Astronomy

Ancient ‘terror birds’ may have been no match for hungry giant caimans

New Scientist Space - Space Headlines - Tue, 07/22/2025 - 8:01pm
A 13-million-year-old leg bone from an enormous flightless bird carries crocodilian tooth marks, showing South America was once a predator-eat-predator world
Categories: Astronomy

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APOD - Tue, 07/22/2025 - 8:00pm

Nebulas are perhaps as famous for being identified


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About 1,300 images from the Lunar Reconnaissance Orbiter


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APOD - Tue, 07/22/2025 - 8:00pm

The sixth object in


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APOD - Tue, 07/22/2025 - 8:00pm

Would the


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APOD - Tue, 07/22/2025 - 8:00pm

Can some supernovas explode twice?


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NASA eClips STEM Student Ambassadors Light Up CNU’s 2025 STEM Community Day

NASA - Breaking News - Tue, 07/22/2025 - 5:25pm
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NASA eClips STEM Student Ambassadors Light Up CNU’s 2025 STEM Community Day

More than 2,000 curious visitors from Newport News and the surrounding Hampton Roads region of Virginia flocked to Christopher Newport University (CNU) on May 31, 2025 for their annual STEM (Science, Technology, Engineering, & Mathematics) Community Day, and the NASA eClips team from the National Institute of Aerospace’s Center for Integrative STEM Education (NIA-CISE) made sure every one of them left with their eyes—and imaginations—fixed on the Sun.

At the heart of the NASA eClips exhibit were NIA’s STEM Student Ambassadors—a team of carefully selected high school students from the Tidewater region of Virginia who underwent extensive training with NASA eClips educators during the summer of 2024. These bright, enthusiastic young leaders are passionate about communicating about and advocating for STEM. The STEM Student Ambassador program is made possible through a Coastal Virginia STEM Hub grant from the Virginia General Assembly and is already having an impact.

Throughout the day, the Ambassadors engaged learners of all ages with two creative, hands-on experiences that connected STEM and the arts:

  • Chalk Corona – Using black construction paper and vibrant chalk, participants recreated the Sun’s corona—the super-hot, gaseous “crown” that’s visible during a total solar eclipse. While they shaded and smudged, the Ambassadors explained why the corona is so important to solar research and handed out certified solar viewers for safe Sun-watching back home.
  • Pastel Auroras – Visitors also discovered how solar wind, storms, and coronal mass ejections (aka Sun “sneezes”) spark Earth’s dazzling auroras. Guided by the Ambassadors, budding artists layered pastels to capture swirling curtains of light, tying recent mid-Atlantic aurora sightings to real-time space weather.

Throughout the day, the Ambassadors’ energy was contagious, turning complex heliophysics into hands-on fun and opening eyes to the opportunities and careers that await in STEM. Judging by the smiles—and the dusting of chalk and pastels—NASA eClips’ presence was, quite literally, the “crowning” touch on an unforgettable community celebration of STEM.

The NASA eClips project provides educators with standards-based videos, activities, and lessons to increase STEM literacy through the lens of NASA. It is supported by NASA under cooperative agreement award number NNX16AB91A and is part of NASA’s Science Activation Portfolio. Learn more about how Science Activation 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

Two STEM Student Ambassadors engage a young girl while she creates her own Pastel Aurora artwork. Share

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Jul 22, 2025

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SpaceX launches 2 powerful internet satellites, lands rocket on ship at sea (video)

Space.com - Tue, 07/22/2025 - 5:24pm
A SpaceX Falcon 9 rocket launched two of SES's O3b mPOWER communications satellites toward medium-Earth orbit today (July 22), then aced its landing on a ship at sea.
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NASA Challenge Wraps, Student Teams Complete Space Suit Challenges

NASA - Breaking News - Tue, 07/22/2025 - 3:34pm

After months of work in the NASA Spacesuit User Interface Technologies for Students (SUITS) challenge, more than 100 students from 12 universities across the United States traveled to NASA’s Johnson Space Center in Houston to showcase potential user interface designs for future generations of spacesuits and rovers.  

NASA Johnson’s simulated Moon and Mars surface, called “the rock yard,” became the students’ testing ground as they braved the humid nights and abundance of mosquitoes to put their innovative designs to the test. Geraldo Cisneros, the tech team lead, said, “This year’s SUITS challenge was a complete success. It provided a unique opportunity for NASA to evaluate the software designs and tools developed by the student teams, and to explore how similar innovations could contribute to future, human-centered Artemis missions. My favorite part of the challenge was watching how the students responded to obstacles and setbacks. Their resilience and determination were truly inspiring.”

Tess Caswell and the Rice Owls team from Rice University test their augmented reality heads-up display at Johnson Space Center’s Rock Yard in Houston on May 19, 2025.NASA/James Blair

Students filled their jam-packed days not only with testing, but also with guest speakers and tours. Swastik Patel from Purdue University said, “All of the teams really enjoyed being here, seeing NASA facilities, and developing their knowledge with NASA coordinators and teams from across the nation. Despite the challenges, the camaraderie between all the participants and staff was very helpful in terms of getting through the intensity. Can’t wait to be back next year!”

John Mulnix with Team Cosmoshox from Wichita State University presents the team’s design during the Spacesuit User Interface Technologies for Students (SUITS) exit pitches at Johnson on May 22, 2025.NASA/David DeHoyos

“This week has been an incredible opportunity. Just seeing the energy and everything that’s going on here was incredible. This week has really made me reevaluate a lot of things that I shoved aside. I’m grateful to NASA for having this opportunity, and hopefully we can continue to have these opportunities.”  

At the end of test week, each student team presented their projects to a panel of experts. These presentations served as a platform for students to showcase not only their technical achievements but also their problem-solving approaches, teamwork, and vision for real-world application. The panel–composed of NASA astronaut Deniz Burnham, Flight Director Garrett Hehn, and industry leaders–posed thought-provoking questions and offered constructive feedback that challenged the students to think critically and further refine their ideas. Their insights highlighted potential areas for growth, new directions for exploration, and ways to enhance the impact of their projects. The students left the session energized and inspired, brimming with new ideas and a renewed enthusiasm for future development and innovation. Burnham remarked, “The students did such a great job. They’re all so creative and wonderful, definitely something that can be implemented in the future.” 

Gamaliel Cherry, director of the Office of STEM Engagement at Johnson, presents the Artemis Educator Award to Maggie Schoonover from Wichita State University on May 22, 2025.NASA/David DeHoyos

NASA SUITS test week was not only about pushing boundaries; it was about earning a piece of history. Three Artemis Student Challenge Awards were presented. The Innovation and Pay it Forward awards were chosen by the NASA team, recognizing the most groundbreaking and impactful designs. Students submitted nominations for the Artemis Educator Award, celebrating the faculty member who had a profound influence on their journeys. The Innovation Award went to Team JARVIS from Purdue University and Indiana State University, for going above and beyond in their ingenuity, creativity, and inventiveness. Team Selene from Midwestern State University earned the Pay it Forward Award for conducting meaningful education events in the community and beyond. The Artemis Educator Award was given to Maggie Schoonover from Wichita State University in Kansas for the time, commitment, and dedication she gave to her team.

“The NASA SUITS challenge completes its eighth year in operation due to the generous support of NASA’s EVA and Human Surface Mobility Program,” said NASA Activity Manager Jamie Semple. “This challenge fosters an environment where students learn essential skills to immediately enter a science, technology, engineering, and mathematics (STEM) career, and directly contribute to NASA mission operations. These students are creating proposals, generating designs, working in teams similar to the NASA workforce, utilizing artificial intelligence, and designing mission operation solutions that could be part of the Artemis III mission and beyond. NASA’s student design challenges are an important component of STEM employment development and there is no better way to learn technical skills to ensure future career success.”

The week serves as a springboard for the next generation of space exploration, igniting curiosity, ambition, and technical excellence among young innovators. By engaging with real-world challenges and technologies, participants not only deepen their understanding of space science but also actively contribute to shaping its future. Each challenge tackled, each solution proposed, and each connection formed represents a meaningful step forward; not just for the individuals involved, but for humanity as a whole. With every iteration of the program, the dream of venturing further into space becomes more tangible, transforming what once seemed like science fiction into achievable milestones.

Are you interested in joining the next NASA SUITS challenge? Find more information here.

The next challenge will open for proposals at the end of August 2025.

The 2025 NASA SUITS teams represent academic institutions across the United States.NASA/David DeHoyos
Categories: NASA

This 200-light-year-wide structure could be feeding our galaxy's center: 'No one had any idea this cloud existed'

Space.com - Tue, 07/22/2025 - 3:06pm
Astronomers have discovered a 200-light-year-wide Giant Molecular Cloud dubbed the Midpoint cloud that seems to be feeding star-building material to the heart of the Milky Way.
Categories: Astronomy

Cleaner air has increased the number of city heatwaves

New Scientist Space - Space Headlines - Tue, 07/22/2025 - 2:00pm
Reducing air pollution is critical for improving public health, but it has brought big climate trade-offs
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Cleaner air has increased the number of city heatwaves

New Scientist Space - Cosmology - Tue, 07/22/2025 - 2:00pm
Reducing air pollution is critical for improving public health, but it has brought big climate trade-offs
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Don't miss the crescent moon cozy up to Jupiter early on July 23

Space.com - Tue, 07/22/2025 - 2:00pm
The thin crescent moon and Jupiter will be visible to the naked eye for early risers on July 23.
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'They are coming here.' AI soldiers invade Earth in thrilling new 'Tron: Ares' trailer

Space.com - Tue, 07/22/2025 - 1:31pm
'A malfunctioning program who wants to live. Why is that?'
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Curiosity Blog, Sols 4604-4606: Taking a Deep Breath of Martian Air

NASA - Breaking News - Tue, 07/22/2025 - 1:29pm
Curiosity Navigation

NASA’s Mars rover Curiosity acquired this image, looking south across the large boxwork structures, using its Left Navigation Camera on July 17, 2025. A series of ridges and hollows forms the dramatic topography in the foreground, while the distant buttes expose additional sedimentary structures. Curiosity acquired this image on Sol 4602, or Martian day 4,602 of the Mars Science Laboratory mission, at 17:49:18 UTC. NASA/JPL-Caltech

Written by Lauren Edgar, Planetary Geologist at USGS Astrogeology Science Center

Earth planning date: Friday, July 18, 2025

Curiosity has started to investigate the main exposure of the boxwork structures! What was once a distant target is now on our doorstep, and Curiosity is beginning to explore the ridges and hollows that make up this terrain, to better understand their chemistry, morphology, and sedimentary structures.

I was on shift as Long Term Planner during this three-sol weekend plan, and the team put together a very full set of activities to thoroughly investigate this site — from the sky to the sand. The plan starts with Navcam and Mastcam observations to assess the amount of dust in the atmosphere, followed by a large Mastcam mosaic to characterize the resistant ridge on which the rover is parked. ChemCam will also acquire a LIBS observation on a target named “Vicuna” to assess the chemistry of a well-exposed vein. The team chose this parking location to characterize the chemistry and textures of this topographic ridge (to compare with topographic lows), so the next part of the plan involves contact science using APXS and MAHLI to look at different parts of the nodular bedrock in our workspace, at targets named “Totoral” and “Sillar.” There’s also a MAHLI observation of the same vein that ChemCam targeted.

The second sol involves more Mastcam imaging to look at different parts of this prominent ridge, along with a ChemCam LIBS observation on top of the ridge, and a ChemCam RMI mosaic to document the sedimentary structures in a distant boxwork feature. Navcam will also be used to look for dust devils. Then Curiosity will take a short drive of about 5 meters (about 16 feet) to explore the adjacent hollow (seen as the low point in the foreground of the above Navcam image). After the drive we’ll take more images for context, and to prepare for targeting in Monday’s plan.

After all of this work it’s time to pause and take a deep breath… of Martian atmosphere. The weekend plan involves an exciting campaign to look for variations in atmospheric chemistry between night and day. So Curiosity will take an overnight APXS atmospheric observation at the same time that two instruments within SAM assess its chemical and isotopic abundance.

On the third sol Curiosity will acquire a ChemCam passive sky observation, leading to a great set of atmospheric data. These measurements will be compared to even more atmospheric activities in Monday’s plan to get the full picture. As you can imagine, this plan requires a lot of power, but it’s worth it for all of the exciting science that we can accomplish here.

The road ahead has many highs and lows (literally), but I can’t wait to see what Curiosity will accomplish. The distant buttes remind us that there’s so much more to explore, and I look forward to continuing to see where Curiosity will take us.


For more Curiosity blog posts, visit MSL Mission Updates


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NASA Invites Media to Senegal Artemis Accords Signing Ceremony

NASA - Breaking News - Tue, 07/22/2025 - 1:15pm
Credit: NASA

Senegal will sign the Artemis Accords during a ceremony at 2 p.m. EDT on Thursday, July 24, at NASA Headquarters in Washington.

Brian Hughes, NASA chief of staff, will host Maram Kairé, director general of the Senegalese space agency (ASES), and Abdoul Wahab Haidara, ambassador of Senegal to the United States, along with other officials from Senegal and the U.S. Department of State.

This event is in-person only. Media interested in attending must RSVP no later than 10 a.m. on Thursday, July 24, to: hq-media@mail.nasa.gov. NASA’s media accreditation policy is online.

The signing ceremony will take place at the James E. Webb Memorial Auditorium at NASA Headquarters in the Mary W. Jackson building, 300 E. Street SW in Washington.

In 2020, during the first Trump Administration, the United States, led by NASA and the State Department, joined with seven other founding nations to establish the Artemis Accords, responding to the growing interest in lunar activities by both governments and private companies. The accords introduced the first set of practical principles aimed at enhancing the safety, transparency, and coordination of civil space exploration on the Moon, Mars, and beyond. Senegal is the 56th country to sign the Artemis Accords since their inception.

The Artemis Accords are grounded in international law and represent the best practices and norms of responsible behavior that NASA and its partners have supported, including the public release of scientific data.

Learn more about the Artemis Accords at:

https://www.nasa.gov/artemis-accords

-end-

Bethany Stevens / Elizabeth Shaw
Headquarters, Washington
202-358-1600
bethany.c.stevens@nasa.gov / elizabeth.a.shaw@nasa.gov

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