
The Space Launch System (SLS) rocket is completing the Green Run test for the rocket’s core stage, shown installed on…

The Northrop Grumman Cygnus cargo module is mated with its service module July 31 at NASA’s Wallops Flight Facility in…

This long-exposure photograph captures a starry sky above the Earth's atmospheric glow.

Expedition 63 Commander Chris Cassidy conducts research activities.

Astronaut Chris Cassidy sequences microbial DNA samples.

Astronaut Chris Cassidy sequences microbial DNA samples.

This long-exposure photograph captures a starry sky above the Earth's atmospheric glow.

This long-exposure photograph captures a starry sky above the Earth's atmospheric glow.

This week in 2004, the MErcury Surface, Space ENvironment, Geochemistry, and Ranging spacecraft was launched aboard a Delta II rocket…

NASA's Curiosity Mars Rover touched down eight years ago, on Aug. 5, 2012, and will soon be joined by a…