Aliens

Aliens can refer to everything from little green men in the sci-fi realm to microscopic life forms beyond Earth. For all these possibilities, Live Science has you covered. We break down the latest discoveries that hint at life on other planets and the state of scientific searches for such extraterrestrial life. Sometimes, we may dissect a "little green man" sighting as well.

Related Topics: Planets, Robots, Astronauts, Paranormal

Filter by Type

Your Selection All Articles Countdowns Image Albums Infographics Quizzes References Wallpapers

Mysterious Light Flashes Discovered in Deep Space. But What Created Them?

September 12, 2018 | Article

Astronomers used A.I. to find 72 more fast radio bursts, but they are still puzzled over what the flashes are.
Read More
Bizarre Rogue 'Planet' with Incredible Auroras Puzzles Scientists

August 08, 2018 | Article

A rogue, planet-size object 20 light-years away from Earth has stunned astronomers with its incredibly powerful magnetic field.
Read More
The Bermuda Triangle: A Breeding Ground for Rogue Waves or a Pit of Human Mistakes?

August 02, 2018 | Article

The risks of the Bermuda Triangle are the risks of the ocean, scientists say
Read More
Life Needs Sunlight — and That Could Change Where We Look for Aliens

August 02, 2018 | Article

With every new exoplanet discovered, the same question arises: Could this world host life? That capability requires so much more than liquid water.
Read More
This Scale Ranks Extraterrestrial-Life Discoveries, Grounding Overblown Headlines

August 02, 2018 | Article

A team of researchers pursuing the search for extraterrestrial intelligence has decided to revive a scale meant to ground alien-detection alerts in reality.
Read More
9 Strange, Scientific Excuses for Why Humans Haven't Found Aliens Yet

July 31, 2018 | Countdown

Where are all the aliens? Scientists have some … unusual theories.
Read More
Scientists Definitely Have Not Found Life on the Moon

July 23, 2018 | Article

A new paper opens a door to the possibility of life having maybe once existed, possibly, on the moon. But it presents no direct evidence for life.
Read More
'Alien' Mummy DNA Probe May Have Crossed Ethical Lines

July 19, 2018 | Article

Did DNA analysis of an "alien" mummy violate legal and ethical boundaries?
Read More
No Aliens, But Scientists Find More Evidence for Life on a Saturn Moon

July 02, 2018 | Article

Large molecules coming out of Enceladus, one of Saturn's moons, might be produced by a biological source beneath the surface.
Read More
How Theoretical Physicists Can Help Find E.T.

June 28, 2018 | Article

If and when humans discover extraterrestrial intelligence, should we expect to find it in the form of biological brains or artificially intelligent robots?
Read More