Extraterrestrial life, or alien life (colloquially aliens), is life that originates from another world rather than on Earth. No extraterrestrial life has yet been scientifically or conclusively detected.

Dec 13, 2025 · The search for extraterrestrial life has accelerated over the past decade as astrobiology turns its focus toward chemical signatures, ocean worlds, and shifting models of planetary habitability.

May 24, 2025 · Discover interesting facts about where alien life forms are likely to exist, and what they look like.

Feb 6, 2026 · Extraterrestrial life can be discovered in one of two forms: alien biology or, more sensationally, alien technology. Much has been made in recent years of footage captured by Naval …

Feb 17, 2026 · extraterrestrial life, life that may exist or may have existed in the universe outside of Earth. The search for extraterrestrial life encompasses many fundamental scientific questions.

May 13, 2025 · Science no longer treats alien life as merely speculative. With the discovery of thousands of exoplanets, new knowledge of Earth’s extremophiles, and advanced missions to Mars …

Feb 6, 2026 · So far, the only life we know of is right here on our planet Earth. But we’re looking. The big question – Is there life beyond Earth? – comes with an ironic asterisk: we don't really have a …

Dec 5, 2025 · Extraterrestrial Life coverage from Scientific American, featuring news and articles about advances in the field.

3 days ago · Bring up aliens and a lot of people will scoff. But not everyone is laughing. Around the turn of the century, 3.8 million people banded together in a real-time search for aliens -- with ...

Apr 17, 2025 · Scientists have found further evidence of possible biosignature gases on the nearby exoplanet K2-18b, strengthening the case that it could support alien life.