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By Space Force
The new facility is enabling Guardians and mission partners to seamlessly monitor space-based sensors and make rapid, data-driven decisions that enhance missile warning and threat responses for the joint force.
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By NASA
5 Min Read Heather Cowardin Safeguards the Future of Space Exploration
As branch chief of the Hypervelocity Impact and Orbital Debris Office at NASA’s Johnson Space Center in Houston, Dr. Heather Cowardin leads a team tasked with a critical mission: characterizing and mitigating orbital debris—space junk that poses a growing risk to satellites, spacecraft, and human spaceflight.
Long before Cowardin was a scientist safeguarding NASA’s mission, she was a young girl near Johnson dreaming of becoming an astronaut.
“I remember driving down Space Center Boulevard with my mom and seeing people running on the trails,” she said. “I told her, ‘That will be me one day—I promise!’ And she always said, ‘I know, honey—I know you will.’”
Official portrait of Heather Cowardin. NASA/James Blai I was committed to working at NASA—no matter what it took.
Heather Cowardin
Hypervelocity Impact and Orbital Debris Branch Chief
Today, that childhood vision has evolved into a leadership role at the heart of NASA’s orbital debris research. Cowardin oversees an interdisciplinary team within the Astromaterials Research and Exploration Science Division, or ARES. She supports measurements, modeling, risk assessments, and mitigation strategies to ensure the efficiency of space operations.
With more than two decades of experience, Cowardin brings expertise and unwavering dedication to one of the agency’s most vital safety initiatives.
Her work focuses on characterizing Earth-orbiting objects using optical and near-infrared telescopic and laboratory data. She helped establish and lead the Optical Measurement Center, a specialized facility at Johnson that replicates space-like lighting conditions and telescope orientations to identify debris materials and shapes, and evaluate potential risk.
Cowardin supports a range of research efforts, from ground-based and in-situ, or in position, observations to space-based experiments. She has contributed to more than 100 scientific publications and presentations and serves as co-lead on Materials International Space Station Experiment missions, which test the durability of materials on the exterior of the orbiting laboratory.
She is also an active member of the Inter-Agency Space Debris Coordination Committee, an international forum with the goal of minimizing and mitigating the risks posed by space debris.
Heather Cowardin, left, holds a spectrometer optical feed as she prepares to take a spectral measurement acquisition on the returned Wide Field Planetary Camera 2 radiator. It was inspected by the Orbital Debris Program Office team for micrometeoroid and orbital debris impacts at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, in 2009, and later studied for space weathering effects on its painted surface. Her passion was fueled further by a mentor, Dr. James R. Benbrook, a University of Houston space physics professor and radar scientist supporting the Orbital Debris Program Office. “He was a hard-core Texas cowboy and a brilliant physicist,” she said. “He brought me on as a NASA fellow to study orbital debris using optical imaging. After that, I was committed to working at NASA—no matter what it took.”
After completing her fellowship, Cowardin began graduate studies at the University of Houston while working full time. Within a year, she accepted a contract position at Johnson, where she helped develop the Optical Measurement Center and supported optical analyses of geosynchronous orbital debris. She soon advanced to optical lead, later serving as a contract project manager and section manager.
Heather Cowardin inspects targets to study the shapes of orbital debris using the Optical Measurement Center at NASA’s Johnson Space Center in Houston. What we do at NASA takes new thinking, new skills, and hard work—but I believe the next generation will raise the bar and lead us beyond low Earth orbit.
Heather Cowardin
Hypervelocity Impact and Orbital Debris Branch Chief
Building on her growing expertise, Cowardin became the laboratory and in-situ measurements lead for the Orbital Debris Program Office, a program within the Office of Safety and Mission Assurance at NASA Headquarters. She led efforts to characterize debris and deliver direct measurement data to support orbital debris engineering models, such as NASA’s Orbital Debris Engineering Model and NASA’s Standard Satellite Breakup Model, while also overseeing major projects like DebriSat.
Cowardin was selected as the Orbital Debris and Hypervelocity Integration portfolio scientist, where she facilitated collaboration within the Hypervelocity Impact and Orbital Debris Office—both internally and externally with stakeholders and customers. These efforts laid the foundation for her current role as branch chief.
“I’ve really enjoyed reflecting on the path I’ve traveled and looking forward to the challenges and successes that lie ahead with this great team,” she said.
One of Cowardin’s proudest accomplishments was earning her doctorate while working full time and in her final trimester of pregnancy.
“Nothing speaks to multitasking and time management like that achievement,” Cowardin said. “I use that story to mentor others—it’s proof that you can do both. Now I’m a mom of two boys who inspire me every day. They are my motivation to work harder and show them that dedication and perseverance always pay off.”
From left to right: Heather Cowardin, her youngest child Jamie, her husband Grady, and her oldest child Trystan. The family celebrates Jamie’s achievement of earning a black belt. Throughout her career, Cowardin said one lesson has remained constant: never underestimate yourself.
“It’s easy to think, ‘I’m not ready,’ or ‘Someone else will ask the question,’” she said. “But speak up. Every role I’ve taken on felt like a leap, but I embraced it and each time I’ve learned and grown.”
She has also learned the value of self-awareness. “It’s scary to ask for feedback, but it’s the best way to identify growth opportunities,” she said. “The next generation will build on today’s work. That’s why we must capture lessons learned and share them. It’s vital to safe and successful operations.”
Heather Cowardin, fifth from left, stands with fellow NASA delegates at the 2024 Inter-Agency Space Debris Coordination Committee meeting hosted by the Indian Space Research Organisation in Bengaluru, India. The U.S. delegation included representatives from NASA, the Department of Defense, the Federal Aviation Administration, and the Federal Communications Commission. To the Artemis Generation, she hopes to pass on a sense of purpose.
“Commitment to a mission leads to success,” she said. “Even if your contributions aren’t immediately visible, they matter. What we do at NASA takes new thinking, new skills, and hard work—but I believe the next generation will raise the bar and lead us beyond low Earth orbit.”
When she is not watching over orbital debris, she is lacing up her running shoes.
“I’ve completed five half-marathons and I’m training for the 2026 Rock ‘n’ Roll half-marathon in Nashville,” she said. “Running helps me decompress—and yes, I often role-play technical briefings or prep conference talks while I’m out on a jog. Makes for interesting moments when I pass people in the neighborhood!”
About the Author
Sumer Loggins
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Last Updated Jun 18, 2025 LocationJohnson Space Center Related Terms
Science & Research Astromaterials Johnson Space Center People of Johnson Explore More
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By NASA
Explore This Section Science Science Activation Tribal Library Co-Design STEM… Overview Learning Resources Science Activation Teams SME Map Opportunities More Science Activation Stories Citizen Science 3 min read
Tribal Library Co-Design STEM Space Workshop
Christine Shupla and Claire Ratcliffe Adams, from the NASA Science Activation program’s NASA@ My Library project, facilitated a professional development Co-Design Space Science, Technology, Engineering, & Mathematics (STEM) Workshop for Tribal libraries on August 29, 2024, hosted at the New Mexico State Library. The workshop was planned with input from Cassandra Osterloh (the New Mexico State Library’s Tribal Libraries Program Coordinator), Teresa Naranjo and Charles Suazo (of the Santa Clara Pueblo Library) and Rexine Calvert (of the P’oe Tsawa Community Library). Evaluation surveys indicate that the workshop met or exceeded 100% of participants’ expectations, and that activities could be made culturally relevant by the participants. Based on input from tribal advisors, the focus topic was space science (although there was also significant interest in various Earth science and environmental topics and in engineering design). These advisors also suggested that the workshop focus on co-design to enable the workshop participants to share and consider ways to make the content and activities culturally-relevant.
The team selected space STEM activities that could be done within library programs and that were within different categories:
Passive programming activities (which were available while participants were arriving) Physically active activities Engineering design activities Art/Science, Technology, Engineering, Art, & Mathematics (STEAM) activities After each type of activity, participants discussed aspects of the activities that they liked, modifications to make the activity more culturally-relevant for their Tribal community, and other activities within that category.
Throughout the workshop, Christine and Claire reiterated that the participants’ thoughts and input were critical—that they were the keepers of knowledge of their communities and that their voices were respected.
One participant stated, “I like how the instructors were re-assuring throughout the session. Making sure everyone was comfortable and making it feel safe to share ideas.” Another, said, “I tend to not participate, but observe, because I’m not a scientist. It was awesome (feeling comfortable) to design too!”
Sixteen of the participants filled out and returned evaluation surveys handed out at the close of the workshop. Just over 50% of those survey responses indicated that the workshop exceeded expectations; all others indicated that it met expectations. Participants also indicated that the activities themselves enabled participants to co-design and make them culturally relevant; this likely is in reference to the discussions held after each activity about ways to apply and revise them. The discussion after a crater-creation activity was particularly extensive: participants discussed replacing the materials with local materials and incorporating aspects of the local topography and even local art. Several participants expressed the desire for more workshops.
The NASA@ My Library project is supported by NASA under cooperative agreement award number NNX16AE30A 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
Workshop participants conducting the “Touchdown” activity, simulating insertion of a rover into an unknown environment. Christine Shupla Share
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Last Updated Feb 13, 2025 Editor Earth Science Division Editorial Team Related Terms
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