It will be the first space walk by American astronauts since 1985.

It was the first time an American astronaut had sent back television images from space.

The company also says that its product was used by American astronauts in space missions.

Some years ago, a young boy was told that American astronauts had once landed on the moon.

Well, most American astronauts are civil servants, which is what the federal government calls its employees.

Shoemaker was also involved in the training of the American astronauts.

He played an important role in developing the pressure suit worn by early American astronauts.

Carpenter was the first American astronaut to eat solid food in space.

At one time she had the longest duration in space for an American astronaut.

When I grew up, in the 1960's, the only American astronauts were men.