Will the veteran astronaut take a time out or enjoy his retirement in another way? A NASA astronaut is now looking forward to greener pastures. Dr. Thomas H.
Private flights to the ISS will soon be manned by retired astronauts. Private flights to the ISS will soon be manned by retired astronauts. NASA has changed its guidelines on private missions to the International Space Station or ISS to require retired astronauts to serve as mission commander on these trips.