Astronomers in Australia discovered an unexpected source for a series of mysterious radio signals.
Chief scientist Ellen Stofan stated that we are likely to find evidence of alien life within 20 years.
Cosmologist Fergus Simpson believes that intelligent extraterrestrials would be much larger than we are.
Could an alien civilization build a large spherical energy-harvesting structure around a distant star ?
The search for extraterrestrial life could be helped along by seeking out cosmic science experiments.
Hydrothermal activity on Saturn's icy moon suggests that it could be a good place to look for alien life.
A red dwarf star is thought to have passed within one light year of our planet 70,000 years ago.
The legendary astronomer believes that it would be 'silly' to try sending messages in to space.
Astrobiologists believe that they have found evidence of alien life in our planet's atmosphere.
So-called 'starivores' could be the ideal target for astronomers seeking signs of extraterrestrial life.
Lloyd Canning has based his artwork on visions associated with his extraterrestrial encounters.
Some scientists believe that the first extraterrestrials we encounter could be robotic in nature.
Researchers believe that alien life forms may be able to survive on 'supercritical' carbon dioxide.
UFO investigator Tom Carey claims to have come in to possession of pictures of an alien entity from 1947.
Could a patient who awakens during surgery later believe that they had been abducted by aliens ?
In 1975 Travis Walton disappeared after he and his co-workers encountered a UFO in northeastern Arizona.
A new survey has revealed that more people in Britain believe in aliens and the paranormal than in God.
Footage of a bizarre writhing specimen fished up near the island of Sentosa has been posted online.
Vast distances between habitable planets could make communication with alien life an inviable concept.
A bizarre and unclassifiable type of mushroom-shaped sea creature has been identified by researchers.