Becoming an astronaut: Personality characteristics

Interpersonal skills are essential: teamwork, followership, leadership, communication skills, especially under stress and over a long-duration, such as a mission to the moon, or Mars.

Astronauts should be able to modulate their skillset, and maybe even their personality, to be prepared for what's needed at the time: Sometimes you are in charge of issuing orders and commanding respect. Other times you might be following orders that mission control sends up.