On Earth, we all know that exercise is good for us. But do we know exactly how good?
A new study aboard the International Space Station will examine changes in astronaut hearts during six months in space.
After more than four months and 56 million miles in orbit, NASA Astronaut Sandra Magnus is now embarking on another mission -- a one-of-a-kind trip to support U.S. military troops overseas.
Expedition 20 Commander Gennady Padalka and Flight Engineer Michael Barratt completed an “internal” spacewalk Wednesday at 3:07 a.m. EDT.
International Space Station Commander Gennady Padalka and Flight Engineer Mike Barratt completed a 4-hour, 54 minute spacewalk at 8:46 a.m. EDT Friday to prepare the Zvezda service module for the arrival of a new Russian module.
Flight Engineers Roman Romanenko, Frank De Winne and Robert Thirsk of the 20th International Space Station crew docked their Soyuz TMA-15 to the International Space Station at 8:34 a.m. EDT Friday.
NASA and Microsoft have released an interactive, 3-D photographic collection of internal and external views of the International Space Station and a model of the next Mars rover using Microsoft's Photosynth technology.
Thanks to the wonders of the Internet, real-time tracking data and the Gateway to Astronaut Photography of Earth, you can take a look at the Earth below from where the International Space Station is right now.
Take a virtual tour of the orbital outpost.
View more NASA video, crew wake-up calls and other behind-the-scenes videos on the ReelNASA YouTube channel.› View the videos →
The Progress 34 cargo craft docks to the International Space Station.› View This Video
Aboard the International Space Station, Expedition 20 Flight Engineer Michael Barratt thanks American troops for their bravery and dedication.› View This Video
Flight Engineer Mike Barratt delivers a message about the Apollo 11 anniversary and America's plan to build a new generation of spacecraft for a new generation of explorers.› View This Video
The crew of Expedition 20 launches the morning of May 26, 2009 from the Baikonur Cosmodrome in Kazakhstan.
The Expedition 19 crew makes a toast to those responsible for getting the International Space Station's Water Recovery System up and running.› View This Video
Exterior photos show the Station's growth as new components are added.
See how the International Space Station orients itself.