A Soyuz space capsule successfully blasted off for the International Space Station on Friday, carrying an American astronaut, a Russian cosmonaut and an Italian astronaut.
An American astronaut found water pooling inside his helmet after he finished a six-plus hour spacewalk on Wednesday, raising new concerns about the safety of NASA's spacesuits.
The head of NASA appealed to Congress on Friday to put more money into restoring America's ability to send astronauts into space instead of relying on Russian rockets.
SpaceX's unmanned Dragon cargo ship blasted off Tuesday toward the International Space Station, carrying a load of food and supplies for the astronauts living in orbit.
SpaceX chalked up another big test flight Wednesday, firing a capsule into the air to try out its new, super-streamlined launch escape system for astronauts.
Who was the first woman to have her period in space? What is it like changing sanitary products while being weightless? And why doesn't menstrual flow just float up into the body when gravity isn't around?
America's first black astronaut, Air Force Maj. Robert Lawrence Jr., finally got full honors Friday on the 50th anniversary of his death.
In this image from 2009, NASA astronaut Stephanie Wilson is attired in a training version of her shuttle launch and entry suit, as she participates in a training session in the Space Vehicle Mock-up Facility at the Johnson ...
European Space Agency (ESA) astronaut and Expedition 46 Flight Engineer Tim Peake (@astro_timpeake) photographed the Alps from his vantage point aboard the International Space Station on Dec. 27, 2015.
A backpack strap used by an Apollo 14 astronaut as he moved around the surface of the moon in 1971 has sold at auction for nearly $42,000.