Two NASA astronauts have completed a nearly six hour long spacewalk to maintenance and upgrades on the International Space Station, the agency announced.

Watch the trailer for 'Sally,' the National Geographic documentary about astronaut Sally Ride, directed by Cristina Costantini.

NASA astronauts Anne McClain and Nichole Ayers emerged around 9 a.m. Thursday, May 1 for the fifth-ever all-female spacewalk.

The first spacewalk was conducted in 1965, by Russian cosmonaut Alexey Leonov. Nearly 20 years later, cosmonaut Svetlana ...

NASA’s new moon rocket uses a lot of components from the shuttle program, including the venerable RS-25 engine. Three were ...

From breathtaking snapshots of distant galaxies to game-changing discoveries about the universe’s expansion, the Hubble Space ...

In the summer of 1995, Robert Williams, then director of the Space Telescope Science Institute, which manages the Hubble ...

Former astronaut José Hernández delivered a lecture in a packed Campbell Hall on April 29, sharing his journey from working ...

NASA is asking private industry and academia for ideas for new rescue services for its astronauts on Earth in the event of ...

NASA officials ordered the removal of one of the massive rocket's RS-25 main engines after discovering a hydraulic leak on the engine's main oxidizer valve actuator, which controls the flow of ...

NASA's oldest full-time astronaut said that during his most recent trip to the space station, he didn't feel his age at all.

Nasa’s oldest astronaut feels ‘30 years old again’ in space - Nasa’s oldest full-time astronaut is back home and doing well, ...