NASA's Opportunity rover has found veins of a mineral that appears to be gypsum, and which could only have been deposited by flowing water.
Solar storms and Coronal Mass Ejections (CMEs) are powerful enough to erode the surface of the moon, NASA simulations indicate.
Astronomers say they've discovered their fastest-spinning star, a hot blue giant rotating at a million miles per hour - 100 times faster than our sun.
Astronomers have discovered the two largest black holes ever - 10 billion times as massive as our own sun - which look set to consume everything within a region five times the size of our solar system.
An international team of scientists has discovered the fastest-rotating massive star ever recorded.
NASA's Kepler space observatory has discovered its first confirmed planet in the so-called "habitable zone" - the region where liquid water could exist on a planet's surface.
Astronomers have come up with two competing theories to explain a mysterious cosmic explosion first detected by NASA's Swift observatory on Christmas Day 2010.
A colony of tiny worms originally dug up from a city garbage dump has survived a stint in space, in research aimed at helping discover how the human body might cope with a trip to another planet.
NASA's state-of-the-art Mars rover, Curiosity, set off safely for the red planet on Saturday morning from Cape Canaveral Air Force Station.
Communication with the stranded Phobos-Grunt Martian probe is coming and going, following a first successful contact on Tuesday.
The European Space Agency (ESA) has managed to re-establish communications with Russia's Phobos-Grunt spacecraft.
The European Space Agency says that one of its ground stations has managed to re-establish contact with Russia's Phobos-Grunt probe, two weeks after control was lost.
In the first manned re-entry since the Shuttle fleet was retired earlier this year, three International Space Station crew members touched down safely last night.
NASA has confirmed that its Curiosity rover will depart for Mars on November 26 from Space Launch Complex-41 at Cape Canaveral Air Force Station, Florida.
China's successfully recovered its unmanned Shenzhou-8 spacecraft, following its docking with the country's fledgling space station Tiangong-1.
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.