The Hubble Telescope was launched on April 24, 1990. NASA says the best is yet to come.
Scientists have been puzzled why Venus has so few craters. New research suggests that the planet could have been resurfaced by volcanoes. The timeline, however, is problematic.
Astronomers have for the first time made detailed measurements of an exoplanet in the temperate zone around its star. Their conclusion: It looks a lot like a planet in our solar system.
Astronauts aboard the ISS were 'moved to tears' Wednesday when they looked outside a new cupola for the first time.
NASA's space shuttle Endeavour launched successfully early Monday morning. The shuttle is headed to install a major module at the International Space Station.
Weather thwarts shuttle launches. But important factors favor this state.
Friday's full moon – or the wolf moon – will be larger than any other in 2010. Here's why.
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 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.
Scientists knew there was water on the moon before NASA crashed a craft into the lunar soil.