Thomas Henry "Tom" Marshburn (born August 29, 1960) is an American physician and a former NASA astronaut. He is a veteran of three spaceflights to the International Space Station and holds the record for the oldest person to perform a spacewalk at 61 years old.

Dr. Tom Marshburn serves as Chief Astronaut & VP of Human Factors Engineering for Sierra Space, a leading commercial space company that is building an end-to-end business and technology platform in space to benefit life on Earth.

2022年12月1日 · Veteran spacewalker and flight surgeon Tom Marshburn is retiring from NASA after 28 years, including 18 years as an astronaut. His last day with the agency is Saturday, Dec. 31.

Dr. Tom Marshburn serves as Chief Astronaut & VP Human Factors Engineering for Sierra Space, leading the medical team for the Human Spaceflight Center and Astronaut Training Academy. He is responsible for the human health of Sierra Space’s corps of our Career, Specialist, and Experiential astronauts.

on November 10, 2021. Marshburn served as a flight engineer on Expedition 66 and commander of Expedition 67 during that mission. NASA’s SpaceX Crew-3 astronauts safely splashed down Friday, May 6, 2022, aboard the Dragon Endurance spacecraft completing the agency’s third long-duration commercial crew mission to the International Space Station.

2025年3月19日 · Tom Marshburn, a former astronaut and flight surgeon, describes experiencing the “huge, magnetic, strange force” of gravity, which astronauts Butch Wilmore and Suni Williams could experience ...

2024年5月22日 · Sierra Space Chief Medical Officer Dr. Tom Marshburn shares how medical research in space makes a difference here on Earth.

2022年12月4日 · NASA astronaut Tom Marshburn is bringing his 337 days of spaceflight experience to a private company. Marshburn flew to the International Space Station (ISS) three separate times, in 2009,...

2022年12月3日 · On December 1, NASA announced the retirement of astronaut Tom Marshburn after 28 years with the agency. On the same day, Sierra Space, a company working on Dream Chaser and Orbital Reef, announced that they had hired Dr. Marshburn.

2022年12月5日 · NASA announced that Dr. Marshburn is retiring from the agency after 28 years of service, with 18 of them as an astronaut. His latest incursion to space was during SpaceX's Crew-3 mission as the crew's pilot, though he could also act as a surgeon should the need arises.