The correct answer is He is a physician selected by NASA to be an astronaut.SpaceX flight surgeon Anil Menon is among the 10 latest trainee astronauts who will join the 2021 class of NASA as it plans for the first human missions to the moon in more than 50 years.He served NASA as the crew flight surgeon for various expeditions on the International Space Station (ISS).Menon is a lieutenant colonel in the US air force and was SpaceXs first flight surgeon.He served Nasa as the crew flight surgeon for various expeditions on the International Space Station (ISS).Menon started as a Nasa flight surgeon in 2014.