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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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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Where Are All the Aliens? 'Out There' Book Excerpt

November 14, 2018 | Article

In 'Out There' (Grand Central Publishing, 2018), Space.com senior writer Mike Wall tackles the search for alien life from many different angles and discusses humanity's drive to get off its natal rock. Read an excerpt from the new book here.
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Harvard Scientists Say Aliens May Explain Bizarre Interstellar Object 'Oumuamua (But Probably Not)

November 06, 2018 | Article

Does oddball space object 'Oumuamua's weird acceleration hint at alien origins?
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Scientists Want to Use Lasers to Guide Aliens to Earth. What Could Go Wrong??

November 06, 2018 | Article

Researchers at MIT just found that humanity could build a laser that could signal an extraterrestrial intelligence.
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A Deadly, Fast-Spreading Form of Super-Ice Could Be Killing Off Alien Life-Forms

November 01, 2018 | Article

Ice that forms at a speed faster than sound could be ripping life on alien planets to shreds before it even has a chance to get going.
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'Alien Invasion' Radio Broadcast Terrified Listeners 80 Years Ago. Would E.T. Contact Cause Panic Today?

October 30, 2018 | Article

A radio report of an alleged "alien invasion" in New Jersey caused alarm 80 years ago today.
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Extraterrestrial Life Could Be Purple

October 21, 2018 | Article

Earth's early life might have been purple, suggesting the search for extraterrestrial life should scan for the color.
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Why Haven't We Found Aliens? Because We're Just Not Looking Hard Enough.

October 16, 2018 | Article

We still have a long way to go in the search for intelligent aliens.
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