There's no set requirement - it depends entirely on the mission requirements (EVA, satellite deployment or recovery, ISS docking, etc.) as to what they'll do an how many they'll perform.
However, it's not unusual for them to train for hundreds or thousands of hours prior to their missions. Remember that mission crews are typically selected several years in advance of the actual mission, so they have plenty of time to train.
The number of astronauts on the space station can vary, but typically there are 6 astronauts on board the International Space Station at a time.
None. You cannot land in space.
i think but i am am not sure but i think it was 1-3 astronauts
A total of 71 astronauts flew into space on Apollo missions. These astronauts were divided across the 17 Apollo missions that included manned flights.
The astronauts have been aboarding it since 1998.
The number of astronauts on the space station can vary, but typically there are 6 astronauts on board the International Space Station at a time.
I'm a professional but even i don't know how many astronauts go into space a year too many to count
None. You cannot land in space.
Space Adaptation Syndrome
6 went with her
there is 8 million astronauts that live in space
30 years
15
3-5
i think but i am am not sure but i think it was 1-3 astronauts
There were 2 astronauts on each Project Gemini mission.
A total of 71 astronauts flew into space on Apollo missions. These astronauts were divided across the 17 Apollo missions that included manned flights.