NASA's 2025 astronaut candidate class is in the midst of important outdoor training.

Inspired by astronauts Sally Ride and Kathryn Sullivan—and later the tragedy of teacher-astronaut Christa McAuliffe, Metcalf-Lindenberger went to Space Camp and assembled a model of the space shuttle ...

Add Yahoo as a preferred source to see more of our stories on Google. More than three months have gone by since any Americans have traveled to space, but that's about to change. A NASA astronaut is ...

Astronauts are an unusual and exclusive subset of earthlings, if only for the fact that about 550 of them have visited space. Unlike airline passengers, who need only prepare for their flights by ...