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From NASA Citizen Scientist to Astronaut Training: An Interview with Benedetta Facini
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By NASA
NASA astronaut and Expedition 65 Flight Engineer Megan McArthur removes Kidney Cells-02 hardware inside the Space Automated Bioproduct Laboratory and swaps media inside the Microgravity Science Glovebox. The human research study seeks to improve treatments for kidney stones and osteoporosis NASA astronaut Megan McArthur has retired, concluding a career spanning more than two decades. A veteran of two spaceflights, McArthur logged 213 days in space, including being the first woman to pilot a SpaceX Dragon spacecraft and the last person to “touch” the Hubble Space Telescope with the space shuttle’s robotic arm.
McArthur launched as pilot of NASA’s SpaceX Crew-2 mission in April 2021, marking her second spaceflight and her first long-duration stay aboard the International Space Station. During the 200-day mission, she served as a flight engineer for Expeditions 65/66, conducting a wide array of scientific experiments in human health, materials sciences, and robotics to advance exploration of the Moon under Artemis and prepare to send American astronauts to Mars.
Her first spaceflight was STS-125 in 2009, aboard the space shuttle Atlantis, the fifth and final servicing mission to Hubble. As a mission specialist, she was responsible for capturing the telescope with the robotic arm, as well as supporting five spacewalks to update and repair Hubble after its first 19 years in space. She also played a key role in supporting shuttle operations during launch, rendezvous with the telescope, and landing.
“Megan’s thoughtful leadership, operational excellence, and deep commitment to science and exploration have made a lasting impact,” said Steve Koerner, acting director of NASA’s Johnson Space Center in Houston. “Her contributions have helped shape the future of human space exploration, and we are incredibly grateful for her service.”
In addition to her flight experience, McArthur has served in various technical and leadership roles within NASA. In 2019, she became the deputy division chief of the Astronaut Office, supporting astronaut training, development, and ongoing spaceflight operations. She also served as the assistant director of flight operations for the International Space Station Program starting in 2017.
Since 2022, McArthur has served as the chief science officer at Space Center Houston, NASA Johnson’s official visitor center. Continuing in this role, she actively promotes public engagement with space exploration themes, aiming to increase understanding of the benefits to humanity and enhance science literacy.
“Megan brought a unique combination of technical skill and compassion to everything she did,” said Joe Acaba, chief of the Astronaut Office at NASA Johnson. “Whether in space or on the ground, she embodied the best of what it means to be an astronaut and a teammate. Her contributions will be felt by the next generation of explorers she helped train.”
McArthur was born in Honolulu and raised as a “Navy kid” in many different locations worldwide. She earned a Bachelor of Science in aerospace engineering from the University of California, Los Angeles, and a doctorate in oceanography from the Scripps Institution of Oceanography at the University of California, San Diego. Before being selected as an astronaut in 2000, she conducted oceanographic research focusing on underwater acoustics, which involved shipboard work and extensive scuba diving.
McArthur is married to former NASA astronaut Robert Behnken, who also flew aboard the Dragon Endeavour spacecraft during the agency’s SpaceX Demo-2 mission in 2020.
“It was an incredible privilege to serve as a NASA astronaut, working with scientists from around the world on cutting-edge research that continues to have a lasting impact here on Earth and prepares humanity for future exploration at the Moon and Mars,” said McArthur. “From NASA’s Hubble Space Telescope to the International Space Station, our research lab in low Earth orbit, humanity has developed incredible tools that help us answer important scientific questions, solve complex engineering challenges, and gain a deeper understanding of our place in the universe. Seeing our beautiful planet from space makes it so clear how fragile and precious our home is, and how vital it is that we protect it. I am grateful I had the opportunity to contribute to this work, and I’m excited to watch our brilliant engineers and scientists at NASA conquer new challenges and pursue further scientific discoveries for the benefit of all.”
To learn more about NASA’s astronauts and their contributions to space exploration, visit:
https://www.nasa.gov/astronauts
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Shaneequa Vereen
Johnson Space Center, Houston
281-483-5111
shaneequa.y.vereen@nasa.gov
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By Space Force
The inaugural class of Guardian officers graduates from the Officer Training Course at Peterson Space Force Base.
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By NASA
Credit: NASA NASA has awarded ASCEND Aerospace & Technology of Cape Canaveral, Florida, the Contract for Organizing Spaceflight Mission Operations and Systems (COSMOS), to provide services at the agency’s Johnson Space Center in Houston.
The COSMOS is a single award, indefinite-delivery/indefinite-quantity contract valued at $1.8 billion that begins its five-year base period no earlier than Dec. 1, with two option periods that could extend until 2034. The Aerodyne Company of Cape Canaveral, Florida, and Jacobs Technology Company of Tullahoma, Tennessee, are joint venture partners.
Work performed under the contract will support NASA’s Flight Operation Directorate including the Orion and Space Launch System Programs, the International Space Station, Commercial Crew Program, and the Artemis campaign. Services include Mission Control Center systems, training systems, mockup environments, and training for astronauts, instructors, and flight controllers.
For more information about NASA and agency programs, visit:
https://www.nasa.gov
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Tiernan Doyle
Headquarters, Washington
202-358-1600
tiernan.doyle@nasa.gov
Chelsey Ballarte
Johnson Space Center, Houston
281-483-5111
chelsey.n.ballarte@nasa.gov
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Last Updated Aug 28, 2025 LocationNASA Headquarters Related Terms
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By NASA
From left to right: JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui, and NASA astronauts Jonny Kim (seated), Zena Cardman, and Mike Fincke conduct training scenarios with their instructors at NASA’s Johnson Space Center in Houston, for their upcoming mission to the International Space Station. Credit: NASA/Helen Arase Vargas NASA astronaut Jonny Kim and JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui will connect with students in New York as they answer prerecorded science, technology, engineering, and mathematics (STEM) questions aboard the International Space Station.
The Earth-to-space call will begin at 9:20 a.m. EDT on Friday, Sept. 5, and will stream live on the agency’s Learn With NASA YouTube channel.
Media interested in covering the event must RSVP by 5 p.m. Wednesday, Sept. 3, to Sara Sloves at: 917-441-1234 or ssloves@thecomputerschool.org.
The Computer School will host this event in New York for middle school students. The goal of this event is to extend learning by exposing students to the real-world experiences and engineering challenges of astronauts working and living aboard the International Space Station.
For nearly 25 years, astronauts have continuously lived and worked aboard the space station, testing technologies, performing science, and developing skills needed to explore farther from Earth. Astronauts communicate with NASA’s Mission Control Center in Houston 24 hours a day through SCaN’s (Space Communications and Navigation) Near Space Network.
Research and technology investigations taking place aboard the space station benefit people on Earth and lay the groundwork for other agency deep space missions. As part of NASA’s Artemis campaign, the agency will send astronauts to the Moon to prepare for future human exploration of Mars, inspiring the world through discovery in a new Golden Age of innovation and exploration.
See more information on NASA in-flight calls at:
https://www.nasa.gov/stemonstation
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Gerelle Dodson
Headquarters, Washington
202-358-1600
gerelle.q.dodson@nasa.gov
Sandra Jones
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov
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Last Updated Aug 28, 2025 LocationNASA Headquarters Related Terms
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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
These maps of Prince George’s County, MD, show surface temperatures collected a few hours apart on July 30, 2023 from the Landsat 9 satellite and the ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) instrument. The dark blue spots in the right hand image are likely clouds that formed in the afternoon.Credit: Stephanie Schollaert Uz, NASA Goddard Space Flight Center Thousands of Americans are impacted each summer by excessive heat and humidity, some suffering from heat-related illnesses when the body can’t cool itself down. Data from NASA satellites could help local governments reduce the sweltering risks, thanks to a collaboration between NASA scientists and officials in Prince George’s County, Maryland. The effort demonstrates how local officials in other communities could turn to NASA data to inform decisions that provide residents with relief from summer heat.
NASA researchers and their Prince George’s County collaborators reported in Frontiers in Environmental Science that they used the Landsat 8 satellite, jointly operated by NASA and the US Geological Survey, and NASA’s Aqua satellite, to gain insight into surface temperature trends across the county over the past few decades. The data also show how temperatures have responded to changing land use and construction. It is information that county planners and environmental experts hope can aid them in their attempts to remediate and prevent heat dangers in the future. The collaboration may also help the county’s first responders anticipate and prepare for heat-related emergencies and injuries.
Cooperation with Prince George’s County expands on NASA’s historic role, said Stephanie Schollaert Uz, an applications scientist with NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and one of the study authors. “Applying government satellite data to county-level problems is new here. We’re trying to make it easier for people outside of NASA to use our data, in part by including how-to guides referenced at the end of our paper,” Schollaert Uz said.
In the long run, county officials hope to use NASA satellites to track the negative health impacts that arise from land use and modification. Removal of tree cover and the construction of non-permeable roads, parking lots, and structures that lead to water runoff are among the factors that create heat islands, where temperatures in localized areas soar relative to the surrounding landscape. In addition to the direct dangers of heat for county residents and workers, areas with higher-than-normal temperatures can drive intense local weather events.
“There’s potentially a greater incidence of microbursts,” said Mary Abe of Prince George’s County’s sustainability division. “The atmosphere can become supercharged over hot spots,” causing high winds and flood-inducing rains.
Prince George’s County planners anticipate relying on NASA satellites to determine where residents and county employees are at greater risk, predict how future construction could impact heat dangers, and develop strategies to moderate heat in areas currently experiencing elevated summer temperatures. Efforts might include protecting existing trees and planting new ones. It could include replacing impermeable surfaces (cement, pavement, etc.) with alternatives that let water soak into the ground rather than running off into storm drains. To verify and calibrate the satellite observations crucial for such planning, county experts are considering enlisting residents to act as citizen scientists to collect temperature and weather data on the ground, Abe said.
Eventually, the NASA satellite temperature data could also lead to strategies to curb insect-borne diseases, said Evelyn Hoban, associate director for the Prince George’s County division of environmental health and communicable disease. “Once we know where the higher temperatures are, we can check to see if they create mosquito or tick breeding grounds,” said Hoban, who coauthored the study. “We could then focus our outreach and education, and perhaps prevention efforts, on areas of greater heat and risk.”
A NASA guide is available to aid other communities who hope to duplicate the Prince George’s County study. The guide provides introductions on a variety of NASA satellite and ground-based weather station data. Instructions for downloading and analyzing the data are illustrated in an accompanying tutorial that uses the Prince George’s County study as an example for other communities to follow on their own.
One of the greatest benefits of the collaboration, Abe said, is the boost in credibility that comes from incorporating NASA resources and expertise in the county’s efforts to improve safety and health. “It’s partly the NASA brand. People recognize it and they’re really intrigued by it,” she said. “Working with NASA builds confidence that the decision-making process is based firmly in science.”
By James Riordon
NASA Goddard Space Flight Center
Media contact: Elizabeth Vlock
NASA Headquarters
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Last Updated Aug 28, 2025 EditorJames RiordonLocationNASA Goddard Space Flight Center Related Terms
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