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

What would aliens actually look like? While simple life forms like bacteria may be common in the universe, complex ...

For the first time in more than 15 years, the International Academy of Astronautics (IAA) Search for Extraterrestrial ...

Experts stress need for transparency while aiming to prevent premature announcements and protect scientists ...

A new study suggests a novel approach in the long-running scientific endeavor to find intelligent life beyond Earth. Instead of casting a wide, speculative net across the cosmos, researchers from Penn ...

It may not breathe, eat, or sleep. It may not reproduce in any ordinary sense. It may not have a face, a voice, or a body shaped by evolution. It may be a machine. This is not a wild idea – it follows ...

A provocative theory circulating among artificial intelligence researchers suggests that once machines achieve human-level intelligence and beyond, they might create something entirely unexpected: a ...

Before we can find alien intelligence, we must first define what intelligence looks like from the outside. The answer, ...

A set of protocols telling scientists what to do – and what not to do – if they ever detect evidence of intelligent life ...

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