Scientists Have a Plan for the Day We Discover Alien Life. Here's What's In It ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of a watery exoplanet with a red dwarf sun overhead. A new study suggests that the exoplanet GJ 3378b, which ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life. Tardigrades—a type of invertebrate ...

The universe is vast and teeming with stars – but if intelligent life exists, it may not be able to visit Earth. By Kai James / The Conversation Published May 27, 2026 8:00 AM EDT This article was ...

Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...

English science fiction writer Arthur C. Clarke once said, “Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.” It’s a line that has motivated ...

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Do aliens exist? Could Earth really be the only planet hosting intelligent life? Debates over the existence of extraterrestrials date back to the earliest Indigenous and western thought. The tools ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of biology because they are often produced by living microbes. However, ...

Explore 25 of the most famous movie aliens, from terrifying Xenomorphs to beloved E.T. Discover iconic extraterrestrials that ...