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 ...

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 ...

For decades, scientists have searched the universe for signs of life beyond Earth. While distant exoplanets often grab the headlines, one of the most promising places may be much closer than we think.

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, ...

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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 ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of an exoplanet in an alien star system. New research suggests that radio emissions from intelligent aliens may be ...

One of the most irresistible questions in sci-fi stories about aliens is what our reaction will be when we learn of their existence. Horror? Bewilderment? Relief? Euphoria? It’s a scenario we love to ...

Researchers question whether AI software is ready to be integrated into life-detection systems on spacecraft and other extraterrestrial explorers.. Credit: NASA / JPL-Caltech / MSSS If a chatbot can ...