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ARMD Solicitations

NASA - Breaking News - Fri, 05/03/2024 - 3:00pm

7 min read

Preparations for Next Moonwalk Simulations Underway (and Underwater) Illustration showing multiple future air transportation options NASA researchers are studying or working to enable.NASA

This ARMD solicitations page compiles the opportunities to collaborate with NASA’s aeronautical innovators and/or contribute to their research to enable new and improved air transportation systems. A summary of available opportunities with key dates requiring action are listed first. More information about each opportunity is detailed lower on this page.

University Leadership Initiative
Key date: May 29, 2024

Commercial Supersonic Technology
Key date: May 31, 2024

University Student Research Challenge
June 20, 2024

Advanced Air Mobility
Key date: Feb. 1, 2025, at 6 p.m. EST

Advanced Capabilities for Emergency Response Operations

GENERAL ANNOUNCEMENT OF REQUEST FOR INFORMATION

Advanced Capabilities for Emergency Response Operations is using this request for information to identify technologies that address current challenges facing the wildland firefighting community. NASA is seeking information on data collection, airborne connectivity and communications solutions, unmanned aircraft systems traffic management, aircraft operations and autonomy, and more. This will support development of a partnership strategy for future collaborative demonstrations.

Interested parties were requested to respond to this notice with an information package no later than 4 pm ET, October 15, 2023, that shall be submitted via https://nari.arc.nasa.gov/acero-rfi. Any proprietary information must be clearly marked. Submissions will be accepted only from United States companies.

View the full RFI Announcement here.

Advanced Air Mobility Mission

GENERAL ADVANCED AIR MOBILITY
ANNOUNCEMENT OF REQUEST FOR INFORMATION

This request for information (RFI) is being used to gather market research for NASA to make informed decisions regarding potential partnership strategies and future research to enable Advanced Air Mobility (AAM). NASA is seeking information from public, private, and academic organizations to determine technical needs and community interests that may lead to future solicitations regarding AAM research and development.

This particular RFI is just one avenue of multiple planned opportunities for formal feedback on or participation in NASA’s AAM Mission-related efforts to develop these requirements and help enable AAM. 

The current respond by date for this RFI is Feb. 1, 2025, at 6 p.m. EST.

View the full RFI announcement here.

NASA Research Opportunities in Aeronautics

NASA’s Aeronautics Research Mission Directorate (ARMD) uses the NASA Research Announcement (NRA) process to solicit proposals for foundational research in areas where ARMD seeks to enhance its core capabilities.

Competition for NRA awards is open to both academia and industry.

The current open solicitation for ARMD Research Opportunities is ROA-2023 and ROA-2024.

Here is some general information to know about the NRA process.

  • NRA solicitations are released by NASA Headquarters through the Web-based NASA Solicitation and Proposal Integrated Review and Evaluation System (NSPIRES).
  • All NRA technical work is defined and managed by project teams within these four programs: Advanced Air Vehicles Program, Airspace Operations and Safety Program, Integrated Aviation Systems Program, and Transformative Aeronautics Concepts Program.
  • NRA awards originate from NASA’s Langley Research Center in Virginia, Ames Research Center in California, Glenn Research Center in Cleveland, and Armstrong Flight Research Center in California.
  • Competition for NRA awards is full and open.
  • Participation is open to all categories of organizations, including educational institutions, industry, and nonprofits.
  • Any updates or amendments to an NRA is posted on the appropriate NSPIRES web pages as noted in the Amendments detailed below.
  • ARMD sends notifications of NRA updates through the NSPIRES email system. In order to receive these email notifications, you must be a Registered User of NSPIRES. However, note that NASA is not responsible for inadvertently failing to provide notification of a future NRA. Parties are responsible for regularly checking the NSPIRES website for updated NRAs.
ROA-2024 NRA Amendments

Amendment 1
UPDATED MAY 3, 2024

(Full text here.)

Amendment 1 to the NASA ARMD Research Opportunities in Aeronautics (ROA) 2024 NRA has been posted on the NSPIRES web site at https://nspires.nasaprs.com.

The announcement solicits proposals from accredited U.S. institutions for research training grants to begin the academic year. This NOFO is designed to support independently conceived research projects by highly qualified graduate students, in disciplines needed to help advance NASA’s mission, thus affording these students the opportunity to directly contribute to advancements in STEM-related areas of study. AAVP Fellowship Opportunities are focused on innovation and the generation of measurable research results that contribute to NASA’s current and future science and technology goals.

Research proposals are sought to address key challenges provided in Elements of Appendix A.8.

Notices of Intent (NOIs) are not required.

A budget breakdown for each proposal is required, detailing the allocation of the award funds by year. The budget document may adhere to any format or template provided by the applicant’s institution.

Proposals were due by April 30, 2024, at 5 PM ET.

Amendment 2
UPDATED APRIL 5, 2024

(Full text here.)

University Leadership Initiative (ULI) provides the opportunity for university teams to exercise technical and organizational leadership in proposing unique technical challenges in aeronautics, defining multi-disciplinary solutions, establishing peer review mechanisms, and applying innovative teaming strategies to strengthen the research impact.

Research proposals are sought in six ULI topic areas in Appendix D.4.

Topic 1: Safe, Efficient Growth in Global Operations (Strategic Thrust 1)

Topic 2: Innovation in Commercial High-Speed Aircraft (Strategic Thrust 2)

Topic 3: Ultra-Efficient Subsonic Transports (Strategic Thrust 3)

Topic 4: Safe, Quiet, and Affordable Vertical Lift Air Vehicles (Strategic Thrust 4)

Topic 5: In-Time System-Wide Safety Assurance (Strategic Thrust 5)

Topic 6: Assured Autonomy for Aviation Transformation (Strategic Thrust 6)

This NRA will utilize a two-step proposal submission and evaluation process. The initial step is a short mandatory Step-A proposal due May 29, 2024. Those offerors submitting the most highly rated Step-A proposals will be invited to submit a Step-B proposal. All proposals must be submitted electronically through NSPIRES at https://nspires.nasaprs.com. An Applicant’s Workshop was held on Thursday April 3, 2024; 1:00-3:00 p.m. ET (https://uli.arc.nasa.gov/applicants-workshops/workshop8)

Amendment 3

NEW APRIL 5, 2024

(Full text here)

Commercial Supersonic Technology seeks proposals for a fuel injector design concept and fabrication for testing at NASA Glenn Research Center.

The proposal for the fuel injector design aims to establish current state-of-the-art in low NOx supersonic cruise while meeting reasonable landing take-off NOx emissions. The technology application timeline is targeted for a supersonic aircraft with entry into service in the 2035+ timeframe.

These efforts are in alignment with activities in the NASA Aeronautics Research Mission Directorate as outlined in the NASA Aeronautics Strategic Implementation Plan, specifically Strategic Thrust 2: Innovation in Commercial High-Speed Aircraft.

Proposals due by May 31, 2024 at 5 pm EDT.

ROA-2023 NRA Amendments

Amendment 5
UPDATED MAY 3, 2024

(Full text here)

Amendment 5 to the NASA ARMD Research Opportunities in Aeronautics (ROA) 2023 NRA has been posted on the NSPIRES web site.

University Student Research Challenge (solicitation NNH23ZEA001N-USRC) seeks to challenge students to propose new ideas/concepts that are relevant to NASA Aeronautics. USRC will provide students, from accredited U.S. colleges or universities, with grants for their projects and with the challenge of raising cost share funds through a crowdfunding campaign. The process of creating and implementing a crowdfunding campaign acts as a teaching accelerator – requiring students to act like entrepreneurs and raise awareness about their research among the public.

The solicitation goal can be accomplished through project ideas such as advancing the design, developing technology or capabilities in support of aviation, by demonstrating a novel concept, or enabling advancement of aeronautics-related technologies.

Notices of Intent (NOIs) are not required for this solicitation. Three-page proposals for the next USRC cycle are due June 20, 2024.

The USRC Cycle 4 Q&A/Info Session and Proposal Workshop will be held on Monday, May 6, 2024 at 2pm ET. Please join us on TEAMS using the Meeting Link below, or call in via +1 256-715-9946,,176038745# Phone Conference ID: 176 038 745#

https://teams.microsoft.com/l/meetup-join/19%3ameeting_N2M5NzhkMmEtMjU5Zi00MmM3LTg2YmItMDlhMjc5M2Q1YzY5%40thread.v2/0?context=%7b%22Tid%22%3a%227005d458-45be-48ae-8140-d43da96dd17b%22%2c%22Oid%22%3a%22831a92f6-eb15-4049-a85e-5a2b0f7a90c7%22%7d

Amendment 4 (Expired)
(Full text here)

Amendment 3 (Expired)
(Full text here)

Amendment 2 (Expired)
(Full text here)

Amendment 1 (Expired)
(Full text here)

Keep Exploring See More About NASA Aeronautics

Aeronautics STEM

Aeronautics Research Mission Directorate

The National Advisory Committee for Aeronautics (NACA)

Aeronáutica en español

Share Details Last Updated May 03, 2024 EditorJim BankeContactJim Bankejim.banke@nasa.gov Related Terms
Categories: NASA

Former NASA Center Director, Scientist to Receive Presidential Medals

NASA - Breaking News - Fri, 05/03/2024 - 2:47pm
Medals of Freedom are displayed Thursday, July 7, 2022, before a ceremony at the White House. (Official White House Photo by Cameron Smith)

President Joe Biden will present Dr. Ellen Ochoa, former center director and astronaut at the agency’s Johnson Space Center in Houston, and Dr. Jane Rigby, senior project scientist for NASA’s James Webb Space Telescope, each with the Presidential Medal of Freedom Friday in a ceremony at the White House in Washington.

The Presidential Medal of Freedom is the nation’s highest civilian honor award, and these two NASA recipients are among the 19 awardees announced May 3. Ochoa is recognized for her leadership at NASA Johnson and as the first Hispanic woman in space, and Rigby is recognized for her work on leading NASA’s transformational space telescope.

“I am proud Ellen and Jane are recognized for their incredible roles in NASA missions, for sharing the power of science with humanity, and inspiring the Artemis Generation to look to the stars,” said NASA Administrator Bill Nelson. “Among her many accomplishments as a veteran astronaut and leader, Ellen served as the second female director of Johnson, flew in space four times, and logged nearly 1,000 hours in orbit. Jane is one of the many wizards at NASA who work every day to make the impossible, possible. The James Webb Space Telescope represents the very best of scientific discovery that will continue to unfold the secrets of our universe. We appreciate Ellen and Jane for their service to NASA, and our country.”

Dr. Ellen Ochoa

Credit: The White House

Ochoa retired from NASA in 2018 after more than 30 years with the agency. In addition to being an astronaut, she served a variety of positions over the years, including the 11th director of NASA Johnson, Johnson deputy center director, and director of Flight Crew Operations.

She joined the agency in 1988 as a research engineer at NASA’s Ames Research Center in Silicon Valley, California, and moved to NASA Johnson in 1990 when she was selected as an astronaut. Ochoa became the first Hispanic woman to go to space when she served on the nine-day STS-56 mission aboard the space shuttle Discovery in 1993. She flew in space four times, including STS-66, STS-96 and STS-110.

Born in California, Ochoa earned a bachelor’s degree in Physics from San Diego State University and a master’s degree and doctorate in Electrical Engineering from Stanford University. As a research engineer at Sandia National Laboratories and NASA Ames Research Center, Ochoa investigated optical systems for performing information processing. She is a co-inventor on three patents and author of several technical papers.

“Wow, what an unexpected and amazing honor! I’m so grateful for all my amazing NASA colleagues who shared my career journey with me,” said Ochoa upon hearing the news of her Presidential Medal of Freedom award.

During her career, Ochoa also received NASA’s highest award, the Distinguished Service Medal, and the Presidential Distinguished Rank Award for senior executives in the federal government. She has received many other awards and is especially honored to have seven schools named for her.

Ochoa also is a member of the National Academy of Engineering, and formerly chaired both the National Science Board and the Nomination Evaluation Committee for the National Medal of Technology and Innovation.  

Dr. Jane Rigby

Credit: The White House

Rigby, who was born and raised in Delaware, is honored with the Medal of Freedom for her role in the success of NASA’s Webb mission – the largest, most powerful space telescope launched on Dec. 25, 2021 – as well as her longtime support of diversity and inclusion in science.

She is an astrophysicist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. She provides scientific leadership for Webb, which has made pioneering discoveries about the secrets of our universe and inspired the world in its first two years of science operations. Rigby worked on the development of Webb for many years, and subsequently led the characterization of Webb’s science performance, which now is exceeding expectations, and frequently shares the progress of Webb science with the public.

“Webb has become a symbol not only of technical excellence and scientific discovery, but also of how much humanity can accomplish when we all work together,” Rigby said. “I’m so proud and grateful to lead the amazing Webb team.”

Rigby is an active researcher, developing new techniques to better understand how galaxies evolve over time and form stars. She has published 160 peer-reviewed publications and has been recognized with awards such as NASA’s Exceptional Scientific Achievement Medal, the Fred Kavli Prize Plenary Lecture from the American Astronomical Society (AAS), and the 2022 LGBTQ+ Scientist of the Year from Out to Innovate.

“Thousands of people around the world came together to build Webb,” said Rigby. “The engineers who built and deployed Webb were critical to Webb’s success, and now thousands of scientists around the world are using Webb to make discovery after discovery.” To represent those contributions, in addition to inviting her family to the Medal of Freedom ceremony, Rigby invited her colleague Mike Menzel, Webb lead mission systems engineer at NASA Goddard, and Dr. Kelsey Johnson, president of the American Astronomical Society.

Rigby also serves as a trustee of the AAS and was a founding member of the AAS Committee for Sexual-Orientation and Gender Minorities in Astronomy. She holds a doctorate in Astronomy from the University of Arizona, as well as a bachelor’s degree in Physics, as well as another in Astronomy and Astrophysics from Penn State University.

NASA’s James Webb Space Telescope is the world’s premier space science observatory. Webb is solving mysteries in our solar system, looking beyond to distant worlds around other stars, and probing the mysterious structures and origins of our universe and our place in it. Webb is an international program led by NASA with its partners, ESA (European Space Agency) and CSA (Canadian Space Agency).

Learn more about NASA’s missions at:

https://www.nasa.gov

-end-

Cheryl Warner / Karen Fox
Headquarters, Washington
202-358-1600
cheryl.m.warner@nasa.gov / karen.c.fox@nasa.gov

Laura Betz
Goddard Space Flight Center, Greenbelt, Md.
301-286-9030
laura.e.betz@nasa.gov

Share Details Last Updated May 06, 2024 EditorTiernan P. DoyleLocationNASA Headquarters Related Terms
Categories: NASA

Boeing Starliner spacecraft 'go' for 1st astronaut launch on May 6, NASA says

Space.com - Fri, 05/03/2024 - 2:22pm
Two NASA astronauts, their spacecraft and rocket have been cleared for a historic 1st flight aboard Boeing's Starliner. Launch will take place no earlier than May 6.
Categories: Astronomy

Long ago, a lake on Mars might have been sprawling with microbes

Space.com - Fri, 05/03/2024 - 2:00pm
The presence of manganese oxide on Mars has positive implications in the search for life beyond Earth.
Categories: Astronomy

Gas Stove Pollution Lingers in Homes for Hours Even outside the Kitchen

Scientific American.com - Fri, 05/03/2024 - 2:00pm

Gas stoves spew nitrogen dioxide at levels that frequently exceed those that are deemed safe by health organizations

Categories: Astronomy

A Moonlit Trio

NASA Image of the Day - Fri, 05/03/2024 - 1:55pm
The Moon, left, Jupiter, right, and Saturn, above and to the left of Jupiter, are seen after sunset with the Washington Monument, Thurs. Dec. 17, 2020, in Washington. The two planets drew closer to each other in the sky as they headed towards a “great conjunction” on Dec. 21, where the two giant planets appeared a tenth of a degree apart.
Categories: Astronomy, NASA

A Moonlit Trio

NASA - Breaking News - Fri, 05/03/2024 - 1:41pm
NASA/Bill Ingalls

The Moon (left), Saturn, and Jupiter (lower right; Saturn is above and to the left of Jupiter) were seen in the sky above the Washington Memorial on Dec. 17, 2020. At the time, Saturn and Jupiter were nearing each other in the sky, culminating in a “great conjunction” on Dec. 21, where they appeared a tenth of a degree apart.

Great conjunctions between Jupiter and Saturn happen every 20 years, making the planets appear to be close to one another. This closeness occurs because Jupiter orbits the Sun every 12 years, while Saturn’s orbit takes 30 years, causing Jupiter to catch up to Saturn every couple of decades as viewed from Earth.

The last great conjunction was even more special: Jupiter and Saturn had not appeared that close in the sky to each other since 1623.

For skywatching tips, visit What’s Up.

Image Credit: NASA/Bill Ingalls

Categories: NASA

Celebrate Lego Star Wars Day with 20% off the Millennium Falcon

Space.com - Fri, 05/03/2024 - 1:12pm
The 1351-piece Lego Millennium Falcon is now 20% off on Amazon and it can be delivered on Star Wars Day, so you can celebrate in style.
Categories: Astronomy

The 2024 Humans to Mars Summit is happening next week

Space.com - Fri, 05/03/2024 - 1:00pm
The annual Humans to Mars Summit takes place next week, with talks focusing on establishing a sustainable and permanent human presence on the Red Planet by the mid-2030s.
Categories: Astronomy

Did the James Webb Space Telescope really find life beyond Earth? Scientists aren't so sure

Space.com - Fri, 05/03/2024 - 12:30pm
Despite excitement last year, the James Webb Space Telescope probably hasn't detected life on a distant super-Earth exoplanet with life signs detected on potential ocean world K2-18 b likely premature.
Categories: Astronomy

Eta Aquarid meteor shower peak could spawn over 100 'shooting stars' per hour this weekend

Space.com - Fri, 05/03/2024 - 12:00pm
The Eta Aquarid meteor shower peaks on May 5, and this year looks favorable for a good light show put on by bits of Halley's Comet as they burn up in Earth's atmosphere.
Categories: Astronomy

Red squirrels were hosts for leprosy in medieval England

New Scientist Space - Cosmology - Fri, 05/03/2024 - 12:00pm
DNA analysis of remains found at medieval sites has identified closely related strains of leprosy-causing bacteria in the bones of humans and a red squirrel
Categories: Astronomy

Red squirrels were hosts for leprosy in medieval England

New Scientist Space - Space Headlines - Fri, 05/03/2024 - 12:00pm
DNA analysis of remains found at medieval sites has identified closely related strains of leprosy-causing bacteria in the bones of humans and a red squirrel
Categories: Astronomy

Vera Rubin’s Primary Mirror Gets its First Reflective Coating

Universe Today - Fri, 05/03/2024 - 11:57am

First light for the Vera Rubin Observatory (VRO) is quickly approaching and the telescope is reaching milestone after milestone. A few weeks ago, the observatory announced that its digital camera, the largest one ever made, is complete.

Now the observatory has announced that its unique primary/tertiary mirror has its first reflective coating.

The Rubin’s massive digital camera has an important job and garners a lot of attention. But it’s powerless without the telescope’s innovative primary/tertiary mirror. Primary mirrors are always the most critical and time-consuming part of modern observatories. The VRO’s primary/tertiary mirror took seven years to make.

The mirror is called a primary/tertiary mirror because it comprises two optical surfaces with different curvatures. The primary mirror is 8.4 meters, while the tertiary mirror is 5 meters in diameter. The pair of surfaces are combined into one large structure. The unique design reduces the telescope’s engineering complexity without reducing its impressive light-gathering capability. It can be rotated quickly and also settles quickly.

The VRO’s unique primary/tertiary mirror is two mirrors in one. It’s mounted on lightweight honeycomb material for strength. Image Credit: VRO

The outer surface forms the primary mirror. It captures light from space first, then that light reflects upwards to the 3.4-meter secondary mirror. After that, it’s reflected back down to the inner 5.0-meter surface that forms the tertiary mirror. Then, the light is sent to the camera.

The primary mirror’s size is critical because it determines how much light the telescope can collect. More light means astronomers can study very faint or distant objects. The VRO’s design allows the camera to capture a large area of sky the size of 7 full moons across in a single image.

via GIPHY

Only meticulous engineering and construction can build a telescope like this. One of the stages is putting the reflective and protective coatings on the mirrors. The VRO announced that the primary/tertiary mirror has its first coating.

“This was a very well-conducted project from every angle, thanks to a combination of careful planning and the technical skills of our excellent team.”

Tomislav Vucina, Senior Coating Engineer, VRO

The VRO has a special onsite coating chamber built just for this purpose. It’s a 128-ton chamber on the observatory’s maintenance floor. It uses a process called magnetron sputtering to apply coatings. The chamber will be reused during the telescope’s lifetime whenever the mirror needs re-coating.

The chamber can apply coatings of different reflective materials alone or in combinations. It took a lot of work to determine the perfect coating for reflectivity and durability. Researchers tested different coatings on a steel stand-in mirror.

The first layer was an adhesive layer of nickel-chromium. Next came an incredibly thin layer of silver weighing only 64 grams spread over the 8.4-meter mirror. On top of that, another nickel-chromium adhesive layer, then a protective layer of silicon nitride to shield the reflective layer.

The person in charge of these precision coatings is Tomislav Vucina, the Senior Coating Engineer. Vucina describes the coatings as a balancing act. “This outer layer needs to be thick enough that it’s not worn off by cleaning,” said Vucina, “but not so thick that it absorbs too many photons and prevents the mirror from meeting Rubin’s scientific requirements.”

This image shows the Rubin Observatory’s 8.4-meter combined primary/tertiary mirror after being coated with protected silver in April 2024. The reflective coating was applied using the observatory’s onsite coating chamber, which will also be used to re-coat the mirror as necessary during Rubin’s 10-year Legacy Survey of Space and Time. Image Credit: RubinObs/NOIRLab/NSF/AURA

Until these coatings were applied, the glass was just glass. Highly specialized glass, but glass nonetheless. Now that the glass has received its reflective silver coating, it’s truly a mirror.

The application process took only 4.5 hours, nothing compared to the 7 years required to build the primary/tertiary mirror. Vucina and his team subjected the mirror to a battery of tests: reflectivity, adhesion, pinhole, and cosmetic. According to Vucina, the application process was successful.

“This was a very well-conducted project from every angle,” said Vucina, “thanks to a combination of careful planning and the technical skills of our excellent team.”

It’s been a long road to completion for the VRO. But after a long wait, first light is rapidly approaching. Excitement and anticipation for the observatory’s unique and powerful scientific contribution is growing. Its main output is the decade-long Legacy Survey of Space and Time.

“We’re extremely excited that both mirrors are now coated and will be installed on the telescope very soon,” said Sandrine Thomas, Deputy Director for Rubin Construction. “The combined reflectivity of these mirrors will enable Rubin to detect very faint and far-away objects, leading to great science!”

The post Vera Rubin’s Primary Mirror Gets its First Reflective Coating appeared first on Universe Today.

Categories: Astronomy

This Week's Sky at a Glance, May 3 – 12

Sky & Telescope Magazine - Fri, 05/03/2024 - 11:18am

This week in the moonless dark, the Summer Triangle appears over the eastern treetops star by star. Leo walks down toward the west. And the Sombrero Galaxy positions itself ideally on the south meridian for your telescope.

The post This Week's Sky at a Glance, May 3 – 12 appeared first on Sky & Telescope.

Categories: Astronomy

'Star Wars: The Phantom Menace' returns to theaters for its 25th anniversary today

Space.com - Fri, 05/03/2024 - 11:00am
This special limited engagement of 'Star Wars: The Phantom Menace' beginning on May 3 includes an early look at the upcoming Disney+ series 'The Acolyte.'
Categories: Astronomy

China's Chang'e 6 Mission Heads to the Moon

Sky & Telescope Magazine - Fri, 05/03/2024 - 10:40am

China’s ambitious Chang’e 6 mission will attempt to return a sample from the lunar farside.

The post China's Chang'e 6 Mission Heads to the Moon appeared first on Sky & Telescope.

Categories: Astronomy

Protocells on early Earth may have been formed by squeezing geysers

New Scientist Space - Cosmology - Fri, 05/03/2024 - 10:00am
Simulations of the crust of early Earth show that cycles of pressure caused by geysers or tidal forces could have generated cell-like structures and even very simple proteins
Categories: Astronomy

Protocells on early Earth may have been formed by squeezing geysers

New Scientist Space - Space Headlines - Fri, 05/03/2024 - 10:00am
Simulations of the crust of early Earth show that cycles of pressure caused by geysers or tidal forces could have generated cell-like structures and even very simple proteins
Categories: Astronomy

Citizen scientists find remarkable exoplanet, name it after Harry Potter character

Space.com - Fri, 05/03/2024 - 10:00am
Citizen scientists have spotted a truly remarkable planet in a binary system's habitable zone. They gave a Harry Potter-inspired nickname.
Categories: Astronomy