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Astronaut Set to Patch NASA’s X-ray Telescope Aboard Space Station
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By NASA
The SpaceX Dragon spacecraft carrying the Axiom Mission 3 crew is pictured approaching the International Space Station on Jan. 20, 2024.Credit: NASA NASA, Axiom Space, and SpaceX are targeting 2:31 a.m. EDT, Wednesday, June 25, for launch of the fourth private astronaut mission to the International Space Station, Axiom Mission 4.
The mission will lift off from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. The crew will travel to the orbiting laboratory on a new SpaceX Dragon spacecraft after launching on the company’s Falcon 9 rocket. The targeted docking time is approximately 7 a.m. Thursday, June 26.
This launch opportunity comes after NASA and Roscosmos officials discussed the status of the recent repair work in the transfer tunnel at the aft (back) most segment of the orbital laboratory’s Zvezda service module. Based on the evaluations, NASA and Roscosmos agreed to further lower the pressure in the transfer tunnel to 100 millimeters of mercury, and teams will continue to evaluate going forward. Safety remains a top priority for NASA and Roscosmos.
“NASA and Roscosmos have a long history of cooperation and collaboration on the International Space Station. This professional working relationship has allowed the agencies to arrive at a shared technical approach and now Axiom Mission 4 launch and docking will proceed,” said acting NASA Administrator Janet Petro. “We look forward to the launch with Axiom Space and SpaceX for this commercial international mission.”
For this mission, NASA is responsible for integrated operations, which begins during the spacecraft’s approach to the space station, continues during the crew’s stay aboard the orbiting laboratory conducting science, education, and commercial activities, and concludes once the spacecraft departs the station.
Live coverage of launch and arrival activities will stream on NASA+. Learn how to watch NASA content through a variety of platforms, including social media.
Peggy Whitson, former NASA astronaut and director of human spaceflight at Axiom Space, will command the commercial mission, while ISRO (Indian Space Research Organisation) astronaut Shubhanshu Shukla will serve as pilot. The two mission specialists are ESA (European Space Agency) project astronaut Sławosz Uznański-Wiśniewski of Poland, and HUNOR (Hungarian to Orbit) astronaut Tibor Kapu of Hungary.
Once docked, the private astronauts plan to spend about two weeks aboard the orbiting laboratory, conducting a mission comprised of science, outreach, and commercial activities.
As part of a collaboration between NASA and ISRO, Axiom Mission 4 delivers on a commitment highlighted by President Donald Trump and Indian Prime Minister Narendra Modi to send the first ISRO astronaut to the station. The space agencies are participating in five joint science investigations and two in-orbit STEM (science, technology, engineering, and mathematics) demonstrations. NASA and ISRO have a long-standing relationship built on a shared vision to advance scientific knowledge and expand space collaboration.
The private mission also carries the first astronauts from Poland and Hungary to stay aboard the International Space Station.
NASA’s mission coverage is as follows (all times Eastern and subject to change based on real-time operations):
Wednesday, June 25
12:30 a.m. – Axiom Space and SpaceX launch coverage begins.
1:40 a.m. – NASA joins the launch coverage on NASA+.
2:31 a.m. – Launch
NASA will end coverage following orbital insertion, which is approximately 15 minutes after launch. As it is a commercial launch, NASA will not provide a clean launch feed on its channels.
Thursday, June 26
5 a.m. – Arrival coverage begins on NASA+, Axiom Space, and SpaceX channels.
7 a.m. – Targeted docking to the space-facing port of the station’s Harmony module.
Arrival coverage will continue through hatch opening and welcome remarks.
All times are estimates and could be adjusted based on real-time operations after launch. Follow the space station blog for the most up-to-date operations information.
The International Space Station is a springboard for developing a low Earth economy. NASA’s goal is to achieve a strong economy off the Earth where the agency can purchase services as one of many customers to meet its science and research objectives in microgravity. NASA’s commercial strategy for low Earth orbit provides the government with reliable and safe services at a lower cost, enabling the agency to focus on Artemis missions to the Moon in preparation for Mars while also continuing to use low Earth orbit as a training and proving ground for those deep space missions.
Learn more about NASA’s commercial space strategy at:
https://www.nasa.gov/commercial-space
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Joshua Finch
Headquarters, Washington
202-358-1100
joshua.a.finch@nasa.gov
Anna Schneider
Johnson Space Center, Houston
281-483-5111
anna.c.schneider@nasa.gov
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Last Updated Jun 24, 2025 LocationNASA Headquarters Related Terms
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By Space Force
Col. Nick Hague, the first Guardian to launch into space, visited Vandenberg Space Force Base.
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By NASA
NASA astronaut Zena Cardman inspects her spacesuit’s wrist mirror at the NASA Johnson Space Center photo studio on March 22, 2024.NASA/Josh Valcarcel NASA astronaut Zena Cardman [link to her bio] inspects her spacesuit’s wrist mirror in this portrait taken at NASA’s Johnson Space Center in Houston on March 22, 2024. Cardman will launch to the International Space Station as part of NASA’s SpaceX Crew-11 mission. This will be her first spaceflight.
Cardman was selected by NASA as a member of the 2017 “Turtles” Astronaut Class. The Virginia native holds a Bachelor’s of Science in Biology and a Master’s of Science in Marine Sciences from the University of North Carolina, Chapel Hill. Her research focused primarily on geobiology and geochemical cycling in subsurface environments, from caves to deep sea sediments. Cardman’s experience includes multiple Antarctic expeditions. Since completing initial training, Cardman has supported real-time station operations and lunar surface exploration planning.
This photo was one of the winners of NASA’s 2024 Photos of the Year.
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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
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