The astronauts will work in two teams, 24 hours a day, to conduct a complex series of tests.

The five astronauts aboard the shuttle worked ceaselessly during the three days they were linked with Mir.

Ground crews disagreed; they felt that the astronauts were not working long enough or hard enough.

Seven American astronauts have worked aboard the Mir in the past three years, they noted.

Both these sciences work together to ensure that astronauts work in a safe environment.

The last surviving astronaut works to complete his mission while contemplating how he would commit suicide afterwards.

The spacewalking astronauts worked for seven hours and one minute outside the space station, 31 minutes longer than expected due to a problem with the Canadarm2.

You will not find matter in the space where the astronauts work repairing the Hubble, so to speak.

The astronauts work on missions at the International Space Station.

There it would serve as the vital connection with Earth when the astronauts were working on the other side.