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.

The NG-18 Cygnus spacecraft departed the International Space Station and burned up in Earth's atmosphere the following day. Astronaut Frank Rubio called the time-lapse a "great example of basic ...

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