Astronaut

An astronaut or cosmonaut is a person trained by a human spaceflight program to command, pilot, or serve as a crew member of a spacecraft. While generally reserved for professional space travelers, the term is sometimes applied to anyone who travels into space, including scientists, politicians, journalists, and tourists.

In film

 * Species II: In the 1998 movie Species II, a manned space mission to Mars, in which an astronaut named Patrick Ross is infected with alien DNA and brings it back to Earth, where it eventually takes host in a woman's body, giving birth to an alien creature of the same race as Sil.