Astronomers have discovered one of the richest planetary systems - containing up to seven planets or...

In a first, astronomers have found a water-rich rocky planetary body outside our Solar System with b...

A young exotic planet - six times more massive than Jupiter - has been discovered floating all alone...

Habitable environments could be less common in the universe than previously thought, say scientists,...

Ten years after a Delta II rocket launched NASA's Spitzer Space Telescope, lighting up the night sky...

The Japan Aerospace Exploration Agency has put off the launch of its new space vehicle, Epsilon, aft...

Waking up to a new year! Researchers have discovered an Earth-sized exoplanet 700 light-years away t...

The US space agency has said it cannot fix its hobbled planet-hunting Kepler Space Telescope and is ...

UK scientists have designed a concept mission to land astronauts on Mars by 2021 -- 12 years before ...