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A new study suggests that if extraterrestrial life exists, it’s likely being lived on this exoplanet. Astronomers have ...

A leading computer scientist says AI may never reach human-level intelligence because it cannot acquire the tacit knowledge that underlies common sense, intuition, and culture. He argues that this ...

"We had previously seen that AI has a big Achilles heel when it is trying to classify things that are unlike the things in ...

The tantalizing prospect of inspecting a mysterious monolith on the surface of Mars moon Phobos was proposed earlier this ...

Scientists say the findings of the new study may make future searches for extraterrestrial intelligence faster and more ...

It was the late 1950s when Ruben Uriarte saw his first UFO — a silvery, oval-shaped object hovering by the Oakland foothills.

The sci-fi movie “Disclosure Day” predicts that our reaction to intelligent alien life will be chaotic. But what does the ...

For instance, what if we really are being visited by aliens from other worlds and they turn out to be aggressive, violent, ...

K2-18b is one of the most promising worlds for the search for extraterrestrial life, so astronomers conducted an unusually ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.