A wireless connection on the International Space Station allowed NASA Flight Engineer T.J. Creamer to log on to Twitter.
This image of the International Space Station (ISS), with Earth as a backdrop, was taken from Space Shuttle Discovery on Sept. 8, 2009, as the two spacecraft began their relative separation.
The Tungurahua volcano spews ash and rocks during an eruption in Banos, Ecuador, in June 2010. Tungurahua has been classed as active since 1999 and had a strong eruption in 2008. It is one of eight active volcanoes in the country.
For years to come, the International Space Station will be the site for experiments benefiting earth research and extended space flight.
The successful space shuttle launch Monday marks an important shift for the shuttle program. From Atlantis onward, the shuttles' primary job is to ferry large parts to the International Space Station.
Monday afternoon's shuttle launch will take the Atlantis's six-member crew on a 10-day mission for maintenance and construction work on the International Space Station.
The launch of NASA's Ares 1-X went fine. But damage to the Ares rocket occurred at splashdown.
President Dmitry Medvedev says Russia will spend $600 million on a nuclear-powered spacecraft to take men to Mars, and beyond. Is it safe?
As exploring the heavens becomes more expensive, many experts think it is time for nations to band together to push humanity to the next threshold of space exploration.
From sending rhesus monkeys into orbit to India's launch of a lunar probe, a hitchhiker's guide to exploration of the universe.