Scientists from the University of Texas at Austin have discovered what appears to be a massive body of liquid water locked inside the icy shell of Jupiter's moon Europa.
NASA's decided to extend the MESSENGER mission for an extra year of orbital operations at Mercury.
NASA is in the final stages of preparing its Mars Curiosity rover for a launch from Florida's Space Coast on November 25.
NASA's explained - with some weariness, one imagines - that next year really isn't going to see the release of any massive solar flares which could destroy the Earth.
A Russian Soyuz spacecraft blasted off successfully for the International Space Station late last night, carrying one American and two Russian astronauts.
Russian scientists still can't contact the lost Martian probe Phobos-Grunt, state media are reporting - and there's a danger it could fall to Earth with a massively toxic explosion.
Astronomers have discovered two clouds of gas that are still in the same state as they were just minutes after the Big Bang.
NASA's Hubble Space Telescope has identified 18 "tiny" galaxies which existed 9 billion years ago and are brimming with star birth.
Scientists believe they finally have an explanation for why magnetized rocks are found on the moon, even though it now has no magnetic field.
NASA has released an animated clip depicting the proposed 2014 test flight of its Orion spacecraft.
A Russian Mars probe, its first interplanetary mission in 15 years, failed to take the correct course after launch, the Russian space agency has reported.
NASA is planning to conduct an unmanned flight test of its Orion spacecraft in early 2014.
The Fermi paradox asks why, if intelligent life is common, no technological civilizations have ever been observed.
NASA's Deep Space Network antenna has captured new radar images of Asteroid 2005 YU55 as it approaches Earth in what's set to be the closest approach of a big asteroid ever recorded.
The Obama administration has responded to a petition asking the White House to acknowledge the existence of an extraterrestrial presence on Earth.
A new technique to study the bright disc of matter surrounding a distant black hole is as precise as spotting individual grains of sand on the surface of the moon.
NASA’s Cassini spacecraft is on track to acquire the first detailed radar images of Saturn's moon Enceladus during a flyby on Sunday, November 6.
After a year and a half locked up in a box, six 'astronauts' have finally finished their simulated trip to Mars.
If astronauts make it to Mars, they may not be able to see it very well, a NASA study has shown.
Astrobiologists say they've discovered where in outer space complex organic molecules - the building blocks of life - are most likely to form.