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.

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

Feb 10, 2026 · If we were to ever find alien life, breaking the news to the general public could be much more difficult than one might think.

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

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.

4 days ago · Finding aliens: Astrobiologists say we could find evidence of microbial life within the next 10–20 years. What does that mean? Where are we looking? Projects, chronology, explained

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 …

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 …

But is it a sign of life? The search for evidence of life beyond Earth has fascinated scientists and science fiction writers alike for centuries.