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.

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.

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 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 …

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.

Aug 27, 2025 · The evidence for extraterrestrial life, while still largely indirect, raises profound questions that extend beyond science. If life exists elsewhere in the universe, what does it mean for humanity’s …

Mar 24, 2025 · MIT physics professor Sara Seager looks for possible chemical combinations that could signal the presence of alien life. She and her biochemistry colleagues first focused on the six main …

Feb 25, 2024 · Scientists are becoming increasingly optimistic that extraterrestrial life is out there. Could we finally be on the brink of finding it? There’s never been a more exciting time than right now in the …

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