Yesterday, six Russian and European astronauts walked out of an isolation chamber after 105 days carrying out a simulated Mars mission.

Herschel has started making test observations with all its instruments, and the first pictures are in.

NASA has confirmed that launch countdown operations for the space shuttle Endeavour remain on schedule. The shuttle is expected to lift off from Florida's Kennedy Space Center on Saturday at 7:39 p.m. EDT.

Cosmologists have discovered two supernovae further away than any previously detected, by using a new technique that could help find other dying stars at the edge of the universe.

The US civil space program should focus more on looking after the Earth, the National Research Council (NRC) has warned.

Mars is a lot like Earth, from its landscape and soil right down to its snowy weather, data from the Phoenix lander reveals. 

US company Terrestar used an Ariane rocket to blast the world's biggest commercial satellite into space.

A new class of black hole, more than 500 times the mass of the Sun, has been discovered.

The US's latest weather satellite was successfully launched on Saturday from Space Launch Complex 37 at the Cape Canaveral Air Force Station in Florida.

The crew of the International Space Station have taken photographs of an erupting volcano.

There's a salty ocean on Saturn's moon Enceladus that could possibly harbor life - or there isn't. It depends which of two reports you prefer.

In a blow to conspiracy theorists everywhere, new evidence has shown that the 1908 Tunguska explosion was caused not by an alien spaceship but by a comet.

The Japan Aerospace Exploration Agency (Jaxa) has released the final images taken by its lunar explorer Kaguya as it fell to destruction on the moon.

Impatient astronomers at the European Space Agency (ESA) have taken some sneak pics with the Herschel telescope, snapping a first set of images weeks before engineers have even finished commissioning the device.

The world's fastest and most sensitive astronomical camera is taking its first pictures.

NASA has successfully launched the Lunar Crater Observation and Sensing Satellite, or LCROSS, on a mission to search for water ice in a permanently shadowed crater at the moon's south pole.

For the first time, conclusive evidence has been found of shorelines on Mars.

NASA has postponed the launch of space shuttle Endeavour's STS-127 mission because of another hydrogen leak

NASA officials have rescheduled the launch of space shuttle Endeavour's STS-127 mission for 5:40 a.m. EDT on Wednesday, June 17. The national space agency postponed Endeavour's original June 13 liftoff date due to concerns over a leak associated with the gaseous hydrogen venting system outside the shuttle's external fuel tank.