Two ISS crews are gearing up for departure, with NASA astronaut Tracy Dyson and cosmonauts Kononenko and Chub returning to ...

The Northrop Grumman Cygnus cargo spacecraft was captured by the International Space Station's robotic arm. Credit: NASA ...

In the next decade, the function of the ISS is expected to be replaced by lower-orbit space stations built and maintained by private space companies.

Three months after the Starliner launched, NASA astronauts Barry Wilmore and Suni Williams remain in space. Here's a timeline ...

An American astronaut and two Russian cosmonauts successfully launched Wednesday for a six-month mission to the International ...