Alan Bean, one of only 12 people to walk on the Moon, doesn't believe we have ever been visited by aliens.
A new paper has suggested that we may have already found evidence of intelligent extraterrestrials.
Britain's wartime Prime Minister wrote many articles long before ever stepping foot in Downing Street.
Scientists are hoping to develop a mission to learn once and for all whether there is life on Europa.
Do intelligent extraterrestrials see our planet in the same way as we might see a nature reserve ?
The find is so unusual that it has had to be assigned to a whole new branch of the insect family tree.
Scientists have developed a new testing method to aid in the hunt for extraterrestrial life forms.
Astronomers believe that a planet 14 light years away may be a promising place to look for alien life.
A prehistoric species of shrimp in Australia has been emerging from the ground recently due to heavy rain.
Scientists are keen to launch a mission to Venus to investigate mysterious dark streaks in its clouds.
The Very Large Telescope (VLT) in Chile will soon be seeking out habitable worlds around Alpha Centauri.
An organization in San Francisco is planning to send messages out to potentially habitable planets.
Astronomers have observed strong winds and changing cloud cover on an alien planet for the first time.
Extrasolar planets may not be the only place where it is possible to find signs of extraterrestrial life.
The controversial author of 'Chariots of the Gods' predicts that aliens will return within 20 years.
Two Canadian astronomers have found possible signs that an alien civilization is trying to communicate.
Professor Brian Cox maintains that advanced extraterrestrial civilizations may inevitably self-destruct.
Scientists believe that a nearby extrasolar planet is 'likely' to be capable of supporting alien life.
The world-famous physicist believes that contacting intelligent extraterrestrials is probably a bad idea.
Astronomers are attempting to determine the nature of a strange signal picked up by a Russian telescope.