Scientists believe that interstellar dust streams might be able to transfer organisms between planets.
Astronomers are hoping to one day establish contact with an advanced extraterrestrial civilization.
Yuri Milner is looking to send a spacecraft to Enceladus to look for evidence of extraterrestrial life.
Boriska Kipriyanovich, who has baffled doctors for 20 years, claims he lived on Mars in his past life.
Scientists believe that extraterrestrial life is likely to have a lot in common with life on Earth.
Planetary scientist Alan Stern has suggested that some civilizations may live below a planet's surface.
Congressional candidate Bettina Rodriguez Aguilera recalls having alien abduction experiences as a child.
A new study has cast doubt on the idea that astronomers have discovered a large alien structure in space.
SETI astronomer Seth Shostak maintains that we will find evidence of intelligent aliens within two decades.
Astronomers have identified nine planets from which intelligent aliens could potentially be watching us.
The unidentified radio pulses were picked up from an unknown source in a distant part of the universe.
Two upcoming Mars rover missions will attempt to determine if the Red Planet was once home to life.
Yaphet Kotto, who starred in Ridley Scott's 1979 movie 'Alien', has had close encounters of his own.
Scientists have come up with a way to scan the skies for pulses of light from an alien civilization.
NASA has played down the suggestion that it is on the verge of announcing the discovery of alien life.
The hacktivist group has suggested that NASA may be on the verge of making a very important announcement.
Scientists now believe that the mysterious 1977 space signal had actually come from a passing comet.
Aerospace entrepreneur and NASA partner Robert Bigelow believes that ET is already here on Earth.
The mysterious star has been puzzling astronomers for years due to its erratic, inexplicable behavior.
A large terrestrial planet located 40 light years away could be the perfect place to search for ET.