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The Marshall Star for July 31, 2024


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The Marshall Star for July 31, 2024

After completing its journey from NASA’s Michoud Assembly Facility in New Orleans aboard the Pegasus barge, teams with Exploration Ground Systems (EGS) transport the agency’s powerful SLS (Space Launch System) core stage to NASA’s Kennedy Space Center’s Vehicle Assembly Building in Florida on Tuesday, July 23, 2024. Once inside, SLS will be prepared for integration atop the mobile launcher ahead of the Artemis II launch.

SLS Core Stage Rolls Inside Vehicle Assembly Building at Kennedy

NASA’s SLS (Space Launch System) rocket core stage for the Artemis II mission is inside the Vehicle Assembly Building at the agency’s Kennedy Space Center.

Tugboats and towing vessels moved the barge and core stage 900-miles to the Florida spaceport from NASA’s Michoud Assembly Facility, where it was manufactured and assembled.

After completing its journey from NASA’s Michoud Assembly Facility in New Orleans aboard the Pegasus barge, teams with Exploration Ground Systems (EGS) transport the agency’s powerful SLS (Space Launch System) core stage to NASA’s Kennedy Space Center’s Vehicle Assembly Building in Florida on Tuesday, July 23, 2024. Once inside, SLS will be prepared for integration atop the mobile launcher ahead of the Artemis II launch.
After completing its journey from NASA’s Michoud Assembly Facility aboard the Pegasus barge, teams with Exploration Ground Systems transport the agency’s powerful SLS (Space Launch System) core stage to NASA’s Kennedy Space Center’s Vehicle Assembly Building on July 23.
NASA/Isaac Watson

Team members with NASA’s Exploration Ground Systems Program safely transferred the 212-foot-tall core stage from the agency’s Pegasus barge, which arrived at NASA Kennedy’s Complex 39 turn basin wharf on July 23, onto the self-propelled module transporter, which is used to move large elements of hardware. It was then rolled to the Vehicle Assembly Building transfer aisle where teams will process it until it is ready for rocket stacking operations.

In the coming months, teams will integrate the rocket core stage atop the mobile launcher with the additional Artemis II flight hardware, including the twin solid rocket boosters, launch vehicle stage adapter, and the Orion spacecraft.

The Artemis II test flight will be NASA’s first mission with crew under the Artemis campaign, sending NASA astronauts Victor Glover, Christina Koch, and Reid Wiseman, as well as CSA (Canadian Space Agency) astronaut Jeremy Hansen, on a 10-day journey around the Moon and back.

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Take 5 with Chris Calfee

By Wayne Smith

Ask Chris Calfee about his favorite memory from his 38-year career at NASA’s Marshall Space Flight Center and you’ll discover it’s a difficult question to answer.

That’s because there have been many memories.

Chris Calfee is the SLS Spacecraft Payload Integration and Evolution element manager.
Chris Calfee is the SLS Spacecraft Payload Integration and Evolution element manager.
NASA/Charles Beason

Calfee was the integrator for the upper stage spacecraft for the Marshall-led Chandra X-Ray Observatory, which marked its 25th launch anniversary July 23. He’s worked with Demonstration of Autonomous Rendezvous Technology (DART), a technology mission aimed at demonstrating that a spacecraft could independently rendezvous with an orbiting satellite without human intervention. Calfee was the booster manager for the Ares I-X test flight, which he points to as another career highlight.

And then there’s his favorite memory – working with NASA’s SLS (Space Launch System) rocket and watching the 2022 Artemis I launch from NASA’s Kennedy Space Center.

I’ve been fortunate in my career to have the opportunities I’ve had with NASA,” said Calfee, the SLS Spacecraft Payload Integration and Evolution (SPIE) element manager. “Seeing the Chandra mission fly and the success it has had is awesome. Being able to work DART from cradle to grave, including its flight, was unforgettable. But I’d have to say being able to represent the SLS SPIE Element Office at Kennedy’s Launch Control Center and seeing Artemis I light up the night sky is the proudest moment.”

As the SLS Spacecraft/Payload Integration and Evolution element manager, Calfee’s responsibilities include overseeing the development and delivering key adapter hardware for SLS rockets that will power the first crewed Artemis missions and first flight of SLS in its evolved Block 1B configuration. The hardware includes the launch vehicle stage adapter, interim cryogenic propulsion stage, and the Orion stage adapter – and the universal stage adapter for SLS Block 1B. The SPIE Element Office serves a key role in the successful execution of the SLS mission, both for the initial launch capability as well as the evolution of subsequent rocket configurations.

NASA moved a step closer to the Artemis II launch with the July shipment of the SLS core stage to Kennedy from the agency’s Michoud Assembly Facility. Calfee and his team have the adapters complete for Artemis II and will soon ship them to Kennedy for launch preparations. As work advances toward Artemis II, Calfee looks back on the Artemis I launch as a “surreal experience.” But he put his celebration on hold as he watched the initial moments of the flight.

“The pressure was on the SPIE hardware to finish the job for SLS as we tracked the successful booster burn and separation, and then the core stage’s excellent performance,” said Calfee, who is from Newport, Tennessee, and a graduate of the University of Tennessee. “The interim cryogenic propulsion (ICPS) stage 20-minute burn was approximately one and a half hours after launch, followed by Orion spacecraft separation from the ICPS and Orion stage adapter, the most critical event of the mission from my perspective. It was another huge relief to see the ICPS burn and the Orion separation event go flawlessly.”

Calfee pauses for a photo in front of the SLS rocket ahead of the Artemis I launch in 2022.
Calfee pauses for a photo in front of the SLS rocket ahead of the Artemis I launch in 2022.
NASA/Courtesy of Chris Calfee

Memorable indeed.

Question: Looking ahead to Artemis II and the Artemis campaign, what excites you most about the future of human space exploration and your team’s role it?

Calfee: For me personally, it is exciting just to be a part of the future of human space flight and having the opportunity to influence that future. With respect to the SPIE team, it’s a similar feeling. Having the opportunity to lead a team that has such a significant role and responsibility in our future is an awesome experience.

Question: Who or what drives/motivates you?

Calfee: The opportunity to make a difference, be a part of history, and lead and mentor our future leaders.

Question: Who or what inspired you to pursue an education/career that led you to NASA and Marshall?

Calfee: My parents were my inspiration and provided me the opportunity to pursue my education. Although I followed the space program as a kid, specifically the Apollo program and Moon landings, I never dreamed that I would actually have the opportunity to work for NASA. I found my way to NASA via an on-campus interview job fair, was invited to Marshall for a follow-up interview, and it became an easy decision when an offer was made.

Question: What advice do you have for employees early in their NASA career or those in new leadership roles?

Calfee: For those early in their career, keep an open mind and be willing to take on new challenges. Diversify the resume. For those in new leadership roles, never get complacent. The moment you think you have it all figured out, something will surprise and humble you. I love the quote, “Get comfortable being uncomfortable,” because I guarantee as a leader, you will experience many uncomfortable moments.

Question: What do you enjoy doing with your time while away from work?

Calfee: Spending time with my grandkids. I also enjoy homebrewing and wine making, and I probably spend too much time following and watching college sports.

Smith, a Media Fusion employee and the Marshall Star editor, supports the Marshall Office of Communications.

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Stars, Stripes, and STEM: Q&A with Former NASA Intern, Miss America

Team members at NASA’s Marshall Space Flight Center recently sat down with reigning Miss America, Madison Marsh. In addition to her crown, Marsh is a second lieutenant in the United States Air Force and a former intern who contributed to astrophysics research at Marshall. Watch to learn more about her experience studying gamma-ray bursts and hear what advice she has for anyone interested in a STEM career. (NASA)

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Thomas Brown Named Marshall’s Chief Engineer, Manager of Engineering Office

Thomas Brown has been named center chief engineer and manager of the Chief Engineering Office within the Engineering Directorate at NASA’s Marshall Space Flight Center, effective July 28.

Thomas M. Brown, NASA
Thomas Brown has been named center chief engineer and manager of the Chief Engineering Office within the Engineering Directorate at NASA’s Marshall Space Flight Center.
NASA

In his role, Brown will be responsible for assuring the technical excellence and success of all Marshall-assigned spacecraft, propulsion, science payload, life support, and mission systems. He will provide expert technical leadership in planning, directing, and executing research, technology, ground and flight systems design and development, production, integration, and sustaining engineering for the Space Launch System Program, Human Landing System Program, the Human Exploration Development and Operations Office, and the Science and Technology Office.

Brown previously served as director of the Propulsion Systems Department of the Engineering Directorate, since 2020. In this role, he managed a $68 million annual budget and oversaw a workforce responsible for new and ongoing design and development activities for the propulsion components and systems at Marshall and other NASA centers.

As the capability lead for In-Space Transportation Systems from 2018-2020, Brown led the Systems Capability Leadership Team of system-specific subject matter experts from across the agency for the in-space transportation system’s disciplines, which support NASA’s robotic and human exploration missions. From 2014 to 2018, he was the NASA Technical Fellow for Propulsion and the NASA Propulsion Capability Lead, the agency’s most senior propulsion subject matter expert.

Between 2005 and 2014, Brown served as chief of two divisions within the Propulsion Systems Department, as well as technical advisor to the director of the Propulsion Systems Department at Marshall, where he assisted in internal technology investment planning and served in agency and cross-government level assignments. In 2007, he completed a one-year developmental assignment at Glenn Research Center as acting deputy manager of the Advanced Capabilities Project Office.

Brown began his NASA career at Marshall in 1999 as an aerospace engineer in the Space Transportation Directorate, performing propulsion systems analysis and integration. Initially working design, analysis, and integration of the X-34 Main Propulsion System and the Fastrac/MC-1 rocket engine, Brown’s activities quickly expanded into a broad range of propulsion technology development efforts. He served as chief engineer for several of these efforts during both the Second Generation Reusable Launch Vehicle Program and the Next Generation Launch Technology Program. Specific projects included the Main Propulsion and Auxiliary Propulsion Systems Technology Project and the ISTAR, Rocket Based Combined Cycle technology project.

Brown received a bachelor’s degree in physics from Allegheny College in Meadville, Pennsylvania, before earning his master’s and doctoral degrees in mechanical engineering from Vanderbilt University. He holds a U.S. patent and has published more than 30 refereed journal publications, book sections, and conference proceedings related to fundamental combustion, advanced measurement techniques, propulsion technology, and propulsion systems analysis and integration.

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Marshall Deputy Director Rae Ann Meyer Honored During Huntsville City Football Club Space Night

on-field.jpg?w=1536

NASA Marshall Deputy Director Rae Ann Meyer waves to a crowd of more than 4,000 fans at the Wicks Family Field at Joe Davis Stadium in Huntsville on July 27 during halftime of the soccer match between Huntsville City Football Club and Atlanta United 2. Meyer was honored as the “Hero of the Match,” recognizing her leadership and accomplishments in 35 years of service to the agency. (NASA/Taylor Goodwin)

inside-exhibits.jpg?w=1545

Representatives from 10 Marshall programs and projects staffed booths and exhibits at the stadium throughout the match, sharing details of their respective work to thousands of guests. (NASA/Taylor Goodwin)

outside-display.jpg?w=1545

Marshall’s exhibit footprint began outside of the stadium, welcoming soccer and space fans to the stadium with inflatables and educational materials. (NASA/Taylor Goodwin)

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NASA Supports Burst Test for Orbital Reef Commercial Space Station

An element of a NASA-funded commercial space station, Orbital Reef, under development by Blue Origin and Sierra Space, recently completed a full-scale ultimate burst pressure test as part of the agency’s efforts for new destinations in low Earth orbit.

This milestone is part of a NASA Space Act Agreement awarded to Blue Origin in 2021. Orbital Reef includes elements provided by Sierra Space, including the LIFE (Large Integrated Flexible Environment) habitat structure.

A photograph showing Sierra Space’s LIFE habitat following a full-scale ultimate burst pressure test at NASA’s Marshall Space Flight Center in Huntsville, Alabama
Sierra Space’s LIFE habitat following a full-scale ultimate burst pressure test at NASA’s Marshall Space Flight Center.
Sierra Space

Teams conducted the burst test on Sierra Space’s LIFE habitat structure using testing capabilities at NASA’s Marshall Space Flight Center. The inflatable habitat is fabricated from high-strength webbings and fabric that form a solid structure once pressurized. The multiple layers of soft goods materials that make up the shell are compactly stowed in a payload fairing and inflated when ready for use, enabling the habitat to launch on a single rocket.

“This is an exciting test by Sierra Space for Orbital Reef, showing industry’s commitment and capability to develop innovative technologies and solutions for future commercial destinations,” said Angela Hart, manager of NASA’s Commercial Low Earth Orbit Development Program at the agency’s Johnson Space Center. “Every successful development milestone by our partners is one more step to achieving our goal of enabling commercial low Earth orbit destinations and expanding the low Earth orbit marketplace.”

The pressurization to failure during the test demonstrated the habitat’s capabilities and provided the companies with critical data supporting NASA’s inflatable softgoods certification guidelines, which recommend a progression of tests to evaluate these materials in relevant operational environments and understand the failure modes.

Demonstrating the habitat’s ability to meet the recommended factor of safety through full-scale ultimate burst pressure testing is one of the primary structural requirements on a soft goods article, such as Sierra Space’s LIFE habitat, seeking flight certification.

Prior to this recent test, Sierra Space conducted its first full-scale ultimate burst pressure test on the LIFE habitat at Marshall in December 2023. Additionally, Sierra Space previously completed subscale tests, first at NASA’s Johnson Space Center and then at Marshall as part of ongoing development and testing of inflatable habitation architecture.

NASA supports the design and development of multiple commercial space stations, including Orbital Reef, through funded and unfunded agreements. The current design and development phase will be followed by the procurement of services from one or more companies.

NASA’s goal is to achieve a strong economy in low Earth orbit 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 will provide 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.

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DART Mission Sheds New Light on Target Binary Asteroid System

In studying data collected from NASA’s DART (Double Asteroid Redirection Test) mission, which in 2022 sent a spacecraft to intentionally collide with the asteroid moonlet Dimorphos, the mission’s science team has discovered new information on the origins of the target binary asteroid system and why the DART spacecraft was so effective in shifting Dimorphos’ orbit. 

In five recently published papers in Nature Communications, the team explored the geology of the binary asteroid system, comprising moonlet Dimorphos and parent asteroid Didymos, to characterize its origin and evolution and constrain its physical characteristics. 

The various geological features observed on Didymos helped researchers tell the story of Didymos’ origins. The asteroid’s triangular ridge (first panel from left), and the so-called smooth region, and its likely older, rougher “highland” region (second panel from left) can be explained through a combination of slope processes controlled by elevation (third panel from left). The fourth panel shows the effects of spin-up disruption that Didymos likely underwent to form Dimorphos.
The various geological features observed on Didymos helped researchers tell the story of Didymos’ origins. The asteroid’s triangular ridge (first panel from left), and the so-called smooth region, and its likely older, rougher “highland” region (second panel from left) can be explained through a combination of slope processes controlled by elevation (third panel from left). The fourth panel shows the effects of spin-up disruption that Didymos likely underwent to form Dimorphos.
Johns Hopkins APL/Olivier Barnouin

“These findings give us new insights into the ways that asteroids can change over time,” said Thomas Statler, lead scientist for Solar System Small Bodies at NASA Headquarters. “This is important not just for understanding the near-Earth objects that are the focus of planetary defense, but also for our ability to read the history of our Solar System from these remnants of planet formation. This is just part of the wealth of new knowledge we’ve gained from DART.”

Olivier Barnouin and Ronald-Louis Ballouz of Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, led a paper that analyzed the geology of both asteroids and drew conclusions about their surface materials and interior properties. From images captured by DART and its accompanying LICIACube cubesat – contributed by the Italian Space Agency (ASI), the team observed the smaller asteroid Dimorphos’ topography, which featured boulders of varying sizes. In comparison, the larger asteroid Didymos was smoother at lower elevations, though rocky at higher elevations, with more craters than Dimorphos. The authors inferred that Dimorphos likely spun off from Didymos in a large mass shedding event.

There are natural processes that can accelerate the spins of small asteroids, and there is growing evidence that these processes may be responsible for re-shaping these bodies or even forcing material to be spun off their surfaces.

Analysis suggested that both Didymos and Dimorphos have weak surface characteristics, which led the team to posit that Didymos has a surface age 40–130 times older than Dimorphos, with the former estimated to be 12.5 million years and the latter less than 300,000 years old. The low surface strength of Dimorphos likely contributed to DART’s significant impact on its orbit.

“The images and data that DART collected at the Didymos system provided a unique opportunity for a close-up geological look of a near-Earth asteroid binary system,” said Barnouin. “From these images alone, we were able to infer a great deal of information on geophysical properties of both Didymos and Dimorphos and expand our understanding on the formation of these two asteroids. We also better understand why DART was so effective in moving Dimorphos.”

Based on the internal and surface properties described in Barnouin et al. (2024), this video demonstrates how the spin-up of asteroid Didymos could have led to the growth of its equatorial ridge and the formation of the smaller asteroid Dimorphos, seen orbiting the former near the end of the clip. Particles are colored according to their speeds, with the scale shown at the top, along with the continually changing spin period of Didymos.
University of Michigan/Yun Zhang and Johns Hopkins APL/Olivier Barnouin

Maurizio Pajola, of the National Institute for Astrophysics (INAF) in Rome, and co-authors led a paper comparing the shapes and sizes of the various boulders and their distribution patterns on the two asteroids’ surfaces. They determined the physical characteristics of Dimorphos indicate it formed in stages, likely of material inherited from its parent asteroid Didymos. That conclusion reinforces the prevailing theory that some binary asteroid systems arise from shed remnants of a larger primary asteroid accumulating into a new asteroid moonlet.

Alice Lucchetti, also of INAF, and colleagues found that thermal fatigue – the gradual weakening and cracking of a material caused by heat – could rapidly break up boulders on the surface of Dimorphos, generating surface lines and altering the physical characteristics of this type of asteroid more quickly than previously thought. The DART mission was likely the first observation of such a phenomenon on this type of asteroid. 

Supervised by researcher Naomi Murdoch of ISAE-SUPAERO in Toulouse, France, and colleagues, a paper led by students Jeanne Bigot and Pauline Lombardo determined Didymos’ bearing capacity – the surface’s ability to support applied loads – to be at least 1,000 times lower than that of dry sand on Earth or lunar soil. This is considered an important parameter for understanding and predicting the response of a surface, including for the purposes of displacing an asteroid.

Colas Robin, also of ISAE-SUPAERO, and co-authors analyzed the surface boulders on Dimorphos, comparing them with those on other rubble pile asteroids, including ItokawaRyugu, and Bennu. The researchers found the boulders shared similar characteristics, suggesting all these types of asteroids formed and evolved in a similar fashion. The team also noted that the elongated nature of the boulders around the DART impact site implies that they were likely formed through impact processing.

These latest findings form a more robust overview of the origins of the Didymos system and add to the understanding of how such planetary bodies were formed. As ESA’s (European Space Agency) Hera mission prepares to revisit DART’s collision site in 2026 to further analyze the aftermath of the first-ever planetary defense test, this research provides a series of tests for what Hera will find and contributes to current and future exploration missions while bolstering planetary defense capabilities. 

Johns Hopkins APL managed the DART mission for NASA’s Planetary Defense Coordination Office as a project of the agency’s Planetary Missions Program Office, which is at NASA’s Marshall Space Flight Center. NASA provided support for the mission from several centers, including the Jet Propulsion Laboratory, Goddard Space Flight Center, Johnson Space Center, Glenn Research Center, and Langley Research Center. 

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Fermi Finds New Feature in Brightest Gamma-Ray Burst Yet Seen

In October 2022, astronomers were stunned by what was quickly dubbed the BOAT — the brightest-of-all-time gamma-ray burst (GRB). Now an international science team reports that data from NASA’s Fermi Gamma-ray Space Telescope reveals a feature never seen before.

“A few minutes after the BOAT erupted, Fermi’s Gamma-ray Burst Monitor recorded an unusual energy peak that caught our attention,” said lead researcher Maria Edvige Ravasio at Radboud University in Nijmegen, Netherlands, and affiliated with Brera Observatory, part of INAF (the Italian National Institute of Astrophysics) in Merate, Italy. “When I first saw that signal, it gave me goosebumps. Our analysis since then shows it to be the first high-confidence emission line ever seen in 50 years of studying GRBs.”

A jet of particles moving at nearly light speed emerges from a massive star in this artist’s concept. The star’s core ran out of fuel and collapsed into a black hole. Some of the matter swirling toward the black hole was redirected into dual jets firing in opposite directions. We see a gamma-ray burst when one of these jets happens to point directly at Earth.
A jet of particles moving at nearly light speed emerges from a massive star in this artist’s concept. The star’s core ran out of fuel and collapsed into a black hole. Some of the matter swirling toward the black hole was redirected into dual jets firing in opposite directions. We see a gamma-ray burst when one of these jets happens to point directly at Earth.
NASA

paper about the discovery appears in the July 26 edition of the journal Science.

When matter interacts with light, the energy can be absorbed and reemitted in characteristic ways. These interactions can brighten or dim particular colors (or energies), producing key features visible when the light is spread out, rainbow-like, in a spectrum. These features can reveal a wealth of information, such as the chemical elements involved in the interaction. At higher energies, spectral features can uncover specific particle processes, such as matter and antimatter annihilating to produce gamma rays.

“While some previous studies have reported possible evidence for absorption and emission features in other GRBs, subsequent scrutiny revealed that all of these could just be statistical fluctuations. What we see in the BOAT is different,” said coauthor Om Sharan Salafia at INAF-Brera Observatory in Milan, Italy. “We’ve determined that the odds this feature is just a noise fluctuation are less than one chance in half a billion.”

GRBs are the most powerful explosions in the cosmos and emit copious amounts of gamma rays, the highest-energy form of light. The most common type occurs when the core of a massive star exhausts its fuel, collapses, and forms a rapidly spinning black hole. Matter falling into the black hole powers oppositely directed particle jets that blast through the star’s outer layers at nearly the speed of light. We detect GRBs when one of these jets points almost directly toward Earth.

The BOAT, formally known as GRB 221009A, erupted Oct. 9, 2022, and promptly saturated most of the gamma-ray detectors in orbit, including those on Fermi. This prevented them from measuring the most intense part of the blast. Reconstructed observations, coupled with statistical arguments, suggest the BOAT, if part of the same population as previously detected GRBs, was likely the brightest burst to appear in Earth’s skies in 10,000 years.

The brightest gamma-ray burst yet recorded gave scientists a new high-energy feature to study. Learn what NASA’s Fermi mission saw, and what this feature may be telling us about the burst’s light-speed jets. (NASA’s Goddard Space Flight Center)

The putative emission line appears almost 5 minutes after the burst was detected and well after it had dimmed enough to end saturation effects for Fermi. The line persisted for at least 40 seconds, and the emission reached a peak energy of about 12 MeV (million electron volts). For comparison, the energy of visible light ranges from 2 to 3 electron volts.

So what produced this spectral feature? The team thinks the most likely source is the annihilation of electrons and their antimatter counterparts, positrons.

“When an electron and a positron collide, they annihilate, producing a pair of gamma rays with an energy of 0.511 MeV,” said coauthor Gor Oganesyan at Gran Sasso Science Institute and Gran Sasso National Laboratory in L’Aquila, Italy. “Because we’re looking into the jet, where matter is moving at near light speed, this emission becomes greatly blueshifted and pushed toward much higher energies.”

If this interpretation is correct, to produce an emission line peaking at 12 MeV, the annihilating particles had to have been moving toward us at about 99.9% the speed of light.

“After decades of studying these incredible cosmic explosions, we still don’t understand the details of how these jets work,” noted Elizabeth Hays, the Fermi project scientist at NASA’s Goddard Space Flight Center. “Finding clues like this remarkable emission line will help scientists investigate this extreme environment more deeply.” 

The Fermi Gamma-ray Space Telescope is an astrophysics and particle physics partnership managed by Goddard. Fermi was developed in collaboration with the U.S. Department of Energy, with important contributions from academic institutions and partners in France, Germany, Italy, Japan, Sweden, and the United States.

NASA’s Marshall Space Flight Center is responsible for one of the instruments on the Fermi Gamma-ray Space Telescope – the Gamma-ray Burst Monitor, or GBM. The GBM studies gamma-ray bursts, the most powerful explosions in the universe, as well as other flashes of gamma rays. The GBM sees these bursts across the entire sky, and scientists are using its observations to learn more about the universe.

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      To encourage students to pursue degrees and careers in STEM (science, technology, engineering, and math), Marshall’s Office of STEM Engagement hosts Student Launch, providing them with real-world experiences. Student Launch is one of NASA’s nine Artemis Student Challenges – a variety of activities that expose students to the knowledge and technology required to achieve the goals of Artemis. 
      In addition to the NASA Office of STEM Engagement’s Next Generation STEM project, NASA Space Operations Mission Directorate, Northrup Grumman, National Space Club Huntsville, American Institute of Aeronautics and Astronautics, National Association of Rocketry, Relativity Space and Bastion Technologies provide funding and leadership for the competition. 
      “These bright students rise to a nine-month challenge for Student Launch that tests their skills in engineering, design, and teamwork,” said Kevin McGhaw, director of NASA’s Office of STEM Engagement Southeast Region. “They are the Artemis Generation, the future scientists, engineers, and innovators who will lead us into the future of space exploration.”
      Smith, a Media Fusion employee and the Marshall Star editor, supports the Marshall Office of Communications.
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      NASA Expands Human Exploration Rover Challenge to Middle Schools
      By Wayne Smith
      Following a 2024 competition that garnered international attention, NASA is expanding its Human Exploration Rover Challenge (HERC) to include a remote control division and inviting middle school students to participate.
      The 31st annual competition is scheduled for April 11-12, 2025, at the U.S. Space & Rocket Center, near NASA’s Marshall Space Flight Center. HERC is managed by NASA’s Southeast Regional Office of STEM Engagement at Marshall. The HERC 2025 Handbook has been released, with guidelines for the new remote control (RC) division – ROVR (Remote-Operated Vehicular Research) – and detailing updates for the human-powered division.
      The cover of the HERC 2025 handbook, which is now available online.NASA “Our RC division significantly lowers the barrier to entry for schools who don’t have access to manufacturing facilities, have less funding, or who are motivated to compete but don’t have the technical mentorship required to design and manufacture a safe human-powered rover,” said Chris Joren, HERC technical coordinator. “We are also opening up HERC to middle school students for the first time. The RC division is inherently safer and less physically intensive, so we invite middle school teams and organizations to submit a proposal to be a part of HERC 2025.”
      Another change for 2025 is the removal of task sites on the course for the human-powered rover division, allowing teams to focus on their rover’s design. Recognized as NASA’s leading international student challenge, the 2025 challenge aims to put competitors in the mindset of the Artemis campaign as they pitch an engineering design for a lunar terrain vehicle – they are astronauts piloting a vehicle, exploring the lunar surface while overcoming various obstacles.
      “The HERC team wanted to put together a challenge that allows students to gain 21st century skills, workforce readiness skills, and skills that are transferable,” said Vemitra Alexander, HERC activity lead. “The students have opportunities to learn and apply the engineering design process model, gain public speaking skills, participate in community outreach, and learn the art of collaborating with their peers. I am very excited about HERC’s growth and the impact it has on the students we serve nationally and internationally.”
      Students interested in designing, developing, building, and testing rovers for Moon and Mars exploration are invited to submit their proposals to NASA through Sept. 19.
      More than 1,000 students with 72 teams from around the world participated in the 2024 challenge as HERC celebrated its 30th anniversary as a NASA competition. Participating teams represented 42 colleges and universities and 30 high schools from 24 states, the District of Columbia, Puerto Rico, and 13 other nations from around the world.
      “We saw a massive jump in recognition, not only from within the agency as NASA Chief Technologist A.C. Charania attended the event, but with several of our international teams meeting dignitaries and ambassadors from their home countries to cheer them on,” Joren said. “The most impressive thing will always be the dedication and resilience of the students and their mentors. No matter what gets thrown at these students, they still roll up to the start line singing songs and waving flags.”
      HERC is one of NASA’s eight Artemis Student Challenges reflecting the goals of the Artemis campaign, which seeks to land the first woman and first person of color on the Moon while establishing a long-term presence for science and exploration. NASA uses such challenges to encourage students to pursue degrees and careers in the STEM fields of science, technology, engineering, and mathematics. 
      Since its inception in 1994, more than 15,000 students have participated in HERC – with many former students now working at NASA, or within the aerospace industry.    
      Smith, a Media Fusion employee and the Marshall Star editor, supports the Marshall Office of Communications.
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      New NASA Sonifications Listen to the Universe’s Past
      A quarter of a century ago, NASA released the “first light” images from the agency’s Chandra X-ray Observatory. This introduction to the world of Chandra’s high-resolution X-ray imaging capabilities included an unprecedented view of Cassiopeia A, the remains of an exploded star located about 11,000 light-years from Earth. Over the years, Chandra’s views of Cassiopeia A have become some of the telescope’s best-known images.
      To mark the anniversary of this milestone, new sonifications of three images – including Cassiopeia A (Cas A) – are being released. Sonification is a process that translates astronomical data into sound, similar to how digital data are more routinely turned into images. This translation process preserves the science of the data from its original digital state but provides an alternative pathway to experiencing the data.
      Sonifications of three images have been released to mark the 25th anniversary of Chandra’s “First Light” image. For Cassiopeia A, which was one of the first objects observed by Chandra, X-ray data from Chandra and infrared data from Webb have been translated into sounds, along with some Hubble data. The second image in the sonification trio, 30 Doradus, also contains Chandra and Webb data. NGC 6872 contains data from Chandra as well as an optical image from Hubble. Each of these datasets have been mapped to notes and sounds based on properties observed by these telescopes.NASA/CXC/SAO/K.Arcand, SYSTEM Sounds (M. Russo, A. Santaguida) This sonification of Cas A features data from Chandra as well as NASA’s James Webb, Hubble, and retired Spitzer space telescopes. The scan starts at the neutron star at the center of the remnant, marked by a triangle sound, and moves outward. Astronomers first saw this neutron star when Chandra’s inaugural observations were released 25 years ago this week. Chandra’s X-rays also reveal debris from the exploded star that is expanding outward into space. The brighter parts of the image are conveyed through louder volume and higher pitched sounds. X-ray data from Chandra are mapped to modified piano sounds, while infrared data from Webb and Spitzer, which detect warmed dust embedded in the hot gas, have been assigned to various string and brass instruments. Stars that Hubble detects are played with crotales, or small cymbals.
      Another new sonification features the spectacular cosmic vista of 30 Doradus, one of the largest and brightest regions of star formation close to the Milky Way. This sonification again combines X-rays from Chandra with infrared data from Webb. As the scan moves from left to right across the image, the volume heard again corresponds to the brightness seen. Light toward the top of the image is mapped to higher pitched notes. X-rays from Chandra, which reveal gas that has been superheated by shock waves generated by the winds from massive stars, are heard as airy synthesizer sounds. Meanwhile, Webb’s infrared data show cooler gas that provides the raw ingredients for future stars. These data are mapped to a range of sounds including soft, low musical pitches (red regions), a wind-like sound (white regions), piano-like synthesizer notes indicating very bright stars, and a rain-stick sound for stars in a central cluster.
      The final member of this new sonification triumvirate is NGC 6872, a large spiral galaxy that has two elongated arms stretching to the upper right and lower left, which is seen in an optical light view from Hubble. Just to the upper left of NGC 6872 appears another smaller spiral galaxy. These two galaxies, each of which likely has a supermassive black hole at the center, are being drawn toward one another. As the scan sweeps clockwise from 12 o’clock, the brightness controls the volume and light farther from the center of the image is mapped to higher-pitched notes. Chandra’s X-rays, represented in sound by a wind-like sound, show multimillion-degree gas that permeates the galaxies. Compact X-ray sources from background galaxies create bird-like chirps. In the Hubble data, the core of NGC 6872 is heard as a dark low drone, and the blue spiral arms (indicating active star formation) are audible as brighter, more highly pitched tones. The background galaxies are played as a soft pluck sound while the bright foreground star is accompanied by a crash cymbal.
      More information about the NASA sonification project through Chandra, which is made in partnership with NASA’s Universe of Learning, can be found here. The collaboration was driven by visualization scientist Kimberly Arcand (CXC), astrophysicist Matt Russo, and musician Andrew Santaguida, (both of the SYSTEM Sounds project), along with consultant Christine Malec.
      NASA’s Universe of Learning materials are based upon work supported by NASA under cooperative agreement award number NNX16AC65A to the Space Telescope Science Institute, working in partnership with Caltech/IPAC, Center for Astrophysics | Harvard & Smithsonian, and the Jet Propulsion Laboratory.
      Chandra, managed for NASA by the agency’s Marshall Space Flight Center in partnership with the CXC, is one of NASA’s Great Observatories, along with the Hubble Space Telescope and the now-retired Spitzer Space Telescope and Compton Gamma Ray Observatory. It was first proposed to NASA in 1976 by Riccardo Giacconi, recipient of the 2002 Nobel Prize for Physics based on his contributions to X-ray astronomy, and Harvey Tananbaum, who would later become the first director of the Chandra X-ray Center. Chandra was named in honor of the late Nobel laureate Subrahmanyan Chandrasekhar, who earned the Nobel Prize in Physics in 1983 for his work explaining the structure and evolution of stars.
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      Europa Clipper Gets Set of Super-Size Solar Arrays
      NASA’s Europa Clipper spacecraft recently got outfitted with a set of enormous solar arrays at the agency’s Kennedy Space Center. Each measuring about 46½ feet long and about 13½ feet high, the arrays are the biggest NASA has ever developed for a planetary mission. They must be large so they can soak up as much sunlight as possible during the spacecraft’s investigation of Jupiter’s moon Europa, which is five times farther from the Sun than Earth is.
      NASA’s Europa Clipper is seen Aug. 21 at the agency’s Kennedy Space Center. Engineers and technicians deployed and tested the giant solar arrays to be sure they will operate in flight.NASA/Frank Michaux The arrays have been folded up and secured against the spacecraft’s main body for launch, but when they’re deployed in space, Europa Clipper will span more than 100 feet – a few feet longer than a professional basketball court. The “wings,” as the engineers call them, are so big that they could only be opened one at a time in the clean room of Kennedy’s Payload Hazardous Servicing Facility, where teams are readying the spacecraft for its launch period, which opens Oct. 10. 
      Meanwhile, engineers continue to assess tests conducted on the radiation hardiness of transistors on the spacecraft. Longevity is key, because the spacecraft will journey more than five years to arrive at the Jupiter system in 2030. As it orbits the gas giant, the probe will fly by Europa multiple times, using a suite of science instruments to find out whether the ocean underneath its ice shell has conditions that could support life.
      Powering those flybys in a region of the solar system that receives only 3% to 4% of the sunlight Earth gets, each solar array is composed of five panels. Designed and built at the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, and Airbus in Leiden, Netherlands, they are much more sensitive than the type of solar arrays used on homes, and the highly efficient spacecraft will make the most of the power they generate.
      NASA’s Europa Clipper is seen in a clean room at Kennedy Space Center after engineers and technicians tested and stowed the spacecraft’s giant solar arrays.NASA/Frank Michaux At Jupiter, Europa Clipper’s arrays will together provide roughly 700 watts of electricity, about what a small microwave oven or a coffee maker needs to operate. On the spacecraft, batteries will store the power to run all of the electronics, a full payload of science instruments, communications equipment, the computer, and an entire propulsion system that includes 24 engines.
      While doing all of that, the arrays must operate in extreme cold. The hardware’s temperature will plunge to minus 400 degrees Fahrenheit when in Jupiter’s shadow. To ensure that the panels can operate in those extremes, engineers tested them in a specialized cryogenic chamber at Liège Space Center in Belgium.
      “The spacecraft is cozy. It has heaters and an active thermal loop, which keep it in a much more normal temperature range,” said APL’s Taejoo Lee, the solar array product delivery manager. “But the solar arrays are exposed to the vacuum of space without any heaters. They’re completely passive, so whatever the environment is, those are the temperatures they get.”
      About 90 minutes after launch, the arrays will unfurl from their folded position over the course of about 40 minutes. About two weeks later, six antennas affixed to the arrays will also deploy to their full size. The antennas belong to the radar instrument, which will search for water within and beneath the moon’s thick ice shell, and they are enormous, unfolding to a length of 57.7 feet, perpendicular to the arrays.
      “At the beginning of the project, we really thought it would be nearly impossible to develop a solar array strong enough to hold these gigantic antennas,” Lee said. “It was difficult, but the team brought a lot of creativity to the challenge, and we figured it out.”
      Europa Clipper’s three main science objectives are to determine the thickness of the moon’s icy shell and its interactions with the ocean below, to investigate its composition, and to characterize its geology. The mission’s detailed exploration of Europa will help scientists better understand the astrobiological potential for habitable worlds beyond our planet.
      Managed by Caltech in Pasadena, California, NASA’s Jet Propulsion Laboratory leads the development of the Europa Clipper mission in partnership with APL for NASA’s Science Mission Directorate. APL designed the main spacecraft body in collaboration with JPL and NASA’s Goddard Space Flight Center. The Planetary Missions Program Office at NASA’s Marshall Space Flight Center executes program management of the Europa Clipper mission.
      NASA’s Launch Services Program, based at Kennedy, manages the launch service for the Europa Clipper spacecraft, which will launch on a SpaceX Falcon Heavy rocket from Launch Complex 39A at Kennedy.
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      Work is Underway on NASA’s Next-Generation Asteroid Hunter
      NASA’s new asteroid-hunting spacecraft is taking shape at NASA’s Jet Propulsion Laboratory. Called NEO Surveyor (Near-Earth Object Surveyor), this cutting-edge infrared space telescope will seek out the hardest-to-find asteroids and comets that might pose a hazard to our planet. In fact, it is the agency’s first space telescope designed specifically for planetary defense.
      Targeting launch in late 2027, the spacecraft will travel a million miles to a region of gravitational stability – called the L1 Lagrange point – between Earth and the Sun. From there, its large sunshade will block the glare and heat of sunlight, allowing the mission to discover and track near-Earth objects as they approach Earth from the direction of the Sun, which is difficult for other observatories to do. The space telescope also may reveal asteroids called Earth Trojans, which lead and trail our planet’s orbit and are difficult to see from the ground or from Earth orbit.
      A mirror that was later installed inside NASA’s Near-Earth Object Surveyor shows a reflection of principal optical engineer Brian Monacelli during an inspection of the mirror’s surface at the agency’s Jet Propulsion Laboratory on July 17.NASA/JPL-Caltech NEO Surveyor relies on cutting-edge detectors that observe two bands of infrared light, which is invisible to the human eye. Near-Earth objects, no matter how dark, glow brightly in infrared as the Sun heats them. Because of this, the telescope will be able to find dark asteroids and comets, which don’t reflect much visible light. It also will measure those objects, a challenging task for visible-light telescopes that have a hard time distinguishing between small, highly reflective objects and large, dark ones.
      “NEO Surveyor is optimized to help us to do one specific thing: enable humanity to find the most hazardous asteroids and comets far enough in advance so we can do something about them,” said Amy Mainzer, survey director for NEO Surveyor and a professor at the University of California, Los Angeles. “We aim to build a spacecraft that can find, track, and characterize the objects with the greatest chance of hitting Earth. In the process, we will learn a lot about their origins and evolution.”
      The spacecraft’s only instrument is its telescope. About the size of a washer-and-dryer set, the telescope’s blocky aluminum body, called the optical bench, was built in a JPL clean room. Known as a three-mirror anastigmat telescope, it will rely on curved mirrors to focus light onto its infrared detectors in such a way that minimizes optical aberrations.
      “We have been carefully managing the fabrication of the spacecraft’s telescope mirrors, all of which were received in the JPL clean room by July,” said Brian Monacelli, principal optical engineer at JPL. “Its mirrors were shaped and polished from solid aluminum using a diamond-turning machine. Each exceeds the mission’s performance requirements.”
      Monacelli inspected the mirror surfaces for debris and damage, then JPL’s team of optomechanical technicians and engineers attached the mirrors to the telescope’s optical bench in August. Next, they will measure the telescope’s performance and align its mirrors.
      Complementing the mirror assembly are the telescope’s mercury-cadmium-telluride detectors, which are similar to the detectors used by NASA’s recently retired NEOWISE (short for Near-Earth Object Wide-field Infrared Survey Explorer) mission. An advantage of these detectors is that they don’t necessarily require cryogenic coolers or cryogens to lower their operational temperatures in order to detect infrared wavelengths. Cryocoolers and cryogens can limit the lifespan of a spacecraft. NEO Surveyor will instead keep its cool by using its large sunshade to block sunlight from heating the telescope and by occupying an orbit beyond that of the Moon, minimizing heating from Earth.
      A technician operates articulating equipment to rotate NEO Surveyor’s aluminum optical bench – part of the spacecraft’s telescope – in a clean room at NASA’s Jet Propulsion Laboratory.NASA/JPL-Caltech The telescope will eventually be installed inside the spacecraft’s instrument enclosure, which is being assembled in JPL’s historic High Bay 1 clean room where NASA missions such as Voyager, Cassini, and Perseverance were constructed. Fabricated from dark composite material that allows heat to escape, the enclosure will help keep the telescope cool and prevent its own heat from obscuring observations.
      Once it is completed in coming weeks, the enclosure will be tested to make sure it can withstand the rigors of space exploration. Then it will be mounted on the back of the sunshade and atop the electronic systems that will power and control the spacecraft.
      “The entire team has been working hard for a long time to get to this point, and we are excited to see the hardware coming together with contributions from our institutional and industrial collaborators from across the country,” said Tom Hoffman, NEO Surveyor’s project manager at JPL. “From the panels and cables for the instrument enclosure to the detectors and mirrors for the telescope — as well as components to build the spacecraft — hardware is being fabricated, delivered, and assembled to build this incredible observatory.”
      Assembly of NEO Surveyor can be viewed 24 hours a day, seven days a week, via JPL’s live cam.
      The NEO Surveyor mission marks a major step for NASA toward reaching its U.S. Congress-mandated goal to discover and characterize at least 90% of the near-Earth objects more than 460 feet across that come within 30 million miles of our planet’s orbit. Objects of this size can cause significant regional damage, or worse, should they impact the Earth.
      The mission is tasked by NASA’s Planetary Science Division within the Science Mission Directorate; program oversight is provided by the Planetary Defense Coordination Office, which was established in 2016 to manage the agency’s ongoing efforts in planetary defense. NASA’s Planetary Missions Program Office at the agency’s Marshall Space Flight Center provides program management for NEO Surveyor.
      The project is being developed by JPL and is led by survey director Amy Mainzer at UCLA. Established aerospace and engineering companies have been contracted to build the spacecraft and its instrumentation, including BAE Systems, Space Dynamics Laboratory, and Teledyne. The Laboratory for Atmospheric and Space Physics at the University of Colorado, Boulder will support operations, and IPAC-Caltech in Pasadena, California, is responsible for processing survey data and producing the mission’s data products. Caltech manages JPL for NASA.
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      NASA Sets Coverage for Starliner Return to Earth
      NASA will provide live coverage of the upcoming activities for Boeing’s Starliner spacecraft departure from the International Space Station and return to Earth. The uncrewed spacecraft will depart from the orbiting laboratory for a landing at White Sands Space Harbor in New Mexico.
      Starliner is scheduled to autonomously undock from the space station at approximately 5:04 p.m. CDT Sept. 6, to begin the journey home, weather conditions permitting. NASA and Boeing are targeting approximately 11:03 p.m. Sept. 6 for the landing and conclusion of the flight test.
      The American flag pictured inside the window of Boeing’s Starliner spacecraft at the International Space Station.Credit: NASA NASA’s live coverage of return and related activities will stream on NASA+, the NASA app, and the agency’s website. Learn how to stream NASA programming through a variety of platforms including social media.
      NASA astronauts Butch Wilmore and Suni Williams launched aboard Boeing’s Starliner spacecraft on June 5 for its first crewed flight, arriving at the space station on June 6. As Starliner approached the orbiting laboratory, NASA and Boeing identified helium leaks and experienced issues with the spacecraft reaction control thrusters. For the safety of the astronauts, NASA announced on Aug. 24 that Starliner will return to Earth from the station without a crew. Wilmore and Williams will remain aboard the station and return home in February 2025 aboard the SpaceX Dragon spacecraft with two other crew members assigned to NASA’s SpaceX Crew-9 mission.
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