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

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The Great Exoplanet Bake-Off: Why NASA Made an Oven-Fresh Alien Atmosphere in Its Lab

March 15, 2019 | Article

NASA scientists cooked up an alien atmosphere in their lab to solve the puzzle of "hot Jupiters."
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Here's How a Huge Exoplanet Very Close to Earth Could Hide Strange Forms of Life

January 18, 2019 | Article

There's a rocky planet in our stellar neighborhood that's very big and cold. However, scientists argue, it might still hold life.
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Is Anyone Out There? New SETI Tool Keeps Track of Alien Searches

January 13, 2019 | Article

With research on extraterrestrial life continuing across the world, a noted researcher from the SETI Institute launched a new tool to help researchers keep track of results.
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Scientists Have Discovered a Mysterious Repeating Radio Signal from Deep Space

January 09, 2019 | Article

Don't look now, but Earth is being bombarded with mysterious, invisible light.
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Top-Secret UFO Program Revealed in TV's 'Project Blue Book'

January 08, 2019 | Article

Discover the incredible true story of a secret, decades-long federal investigation of alien encounters.
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If Aliens Are Causing Weird Dimming of 'Tabby' Star,' They Aren't Using Lasers to Do It

January 08, 2019 | Article

The evidence for aliens around one of the weirdest stars in our galaxy — Boyajian's star — is not looking promising.
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Alien Hunters, Stop Using the Drake Equation

December 27, 2018 | Article

For the precocious hunter of off-Earth life, the Drake equation is the ever-ready, go-to toolkit for estimating just how (not) lonely humans are in the Milky Way galaxy. But it's not useful.
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Here's the Truth Behind a NASA Document on Aliens Visiting Earth

December 05, 2018 | Article

Silvano Colombano said that his view on aliens visiting Earth “is not accurately represented” in a viral Fox News article.
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Rare Rainfall in the Atacama Is Deadly for Its Tiniest Inhabitants

December 05, 2018 | Article

What is supposed to be a boon to life caused bacteria to burst like balloons.
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No, Mars InSight Won't Be Searching for Alien Life. Here's What It IS Looking For.

November 26, 2018 | Article

Is there life on Mars? Even if there is, InSight won't tell us.
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