Don't sleep on carbon monoxide, alien hunters.
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.
There's a rocky planet in our stellar neighborhood that's very big and cold. However, scientists argue, it might still hold life.
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.
Discover the incredible true story of a secret, decades-long federal investigation of alien encounters.
The evidence for aliens around one of the weirdest stars in our galaxy — Boyajian's star — is not looking promising.
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.
Silvano Colombano said that his view on aliens visiting Earth “is not accurately represented” in a viral Fox News article.
Researchers at MIT just found that humanity could build a laser that could signal an extraterrestrial intelligence.
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.
Earth's early life might have been purple, suggesting the search for extraterrestrial life should scan for the color.
The brightest lights you cannot see are bombarding Earth from another galaxy, and they could be signs of aliens.
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