A new NASA study has revealed just how many potentially habitable worlds there are in our galaxy.
Astronomers have discovered an Earth-sized world that is drifting freely through the cosmos without a parent star.
Scientists have confirmed the existence of a group of hidden lakes under the planet's south polar region.
Dmitry Rogozin made the rather bizarre claim while speaking to reporters at an exhibition last week.
A new study has cast doubt on the prevailing theory of how our planet came to possess so much water.
We've been doing a good job of messing up our own planet, but what about the rest of the solar system ?
Scientists have determined that Ceres, like Europa and Enceladus, is home to an ocean of liquid water.
Other stars may be able to host more than our own solar system's solitary habitable world, a new study suggests.
The ambitious new rover, which will look for signs of life on Mars, is now on its way to the Red Planet.
Intriguing footage shows an airliner seemingly hovering motionless in the air - but is it just an optical illusion?
Newly released images show the breathtaking beauty of two relatively nearby planetary nebulae.
Scientists studying our planet's interior have found previously unknown structures beneath the surface.
Scientists have highlighted the role of dust in cooling or warming an otherwise uninhabitable extrasolar world.
The closest known extrasolar planet may also be one of the most Earth-like worlds ever discovered.
Sir Richard Branson's new satellite launching company didn't have much luck with its debut flight yesterday.
The SpaceX CEO has responded to the claim that his plans to terraform the Red Planet are largely impractical.
Astronomers have identified a distant exoplanet with a size and orbit comparable to that of the Earth.
A stunning new image of the solar system's largest planet was put together from hundreds of shots.
The US military's secretive space plane is due to launch on May 16th with a cargo full of experiments.
A relatively nearby extrasolar world discovered back in 2004 has since disappeared without a trace.