The United States is keeping some of its nuclear warheads in case of an apocalyptic asteroid threat.
Astronomers have identified the first signs of life-bearing chemistry at the center of the galaxy.
One physicist has determined that what we know about black holes and the Big Bang could be wrong.
Rosetta's companion spacecraft has made history today by touching down on the surface of a comet.
India's Mangalyaan probe has made history this week by successfully entering orbit around Mars.
Astronomers have found signs of water vapor on a planet located around 120 light years from Earth.
The satellite has arrived in orbit around the Red Planet after a 10-month voyage across the solar system.
A skintight lightweight spacesuit designed at MIT could one day be used by astronauts going to Mars.
Scientists have detected further evidence that life could have once existed on the surface of Mars.
NASA's Curiosity rover has finally arrived at its primary destination after more than two years on Mars.
A particularly intense solar storm could cause communications and power grid disruptions this week.
A small space rock left a sizeable crater near Managua's international airport on Saturday night.
Jupiter's freezing moon Europa is home to its own ice-based version of Earth's plate tectonics.
New self-guided robots could soon be used to help assess the threat posed by items of space debris.
Astronomers have determined that white dwarf stars can suddenly spring back to life and explode.
Astronomers have found evidence of water clouds outside of our own solar system for the first time.
Russia's space agency Roscosmos is seeking $440 million to develop inflatable space habitats.
An ancient orange star has revealed hints of one of the first stars to ever exist in the universe.
Astronauts have been left perplexed after traces of sea plankton were found on the station's exterior.
NASA's Stardust spacecraft is now believed to have picked up particles from outside the solar system