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.

13 小时之前 · The top official at Nasa says that the chance of alien existence is a factor in how the US space agency plans its missions. Speaking on Sunday, Nasa administrator Jared Isaacman told …

2025年5月24日 · Discover interesting facts about where alien life forms are likely to exist, and what they look like.

2026年3月20日 · Extraterrestrial life-forms could have chemistry and characteristics that are quite foreign to humans, making them hard, if not impossible, for our tools to detect. So, are we alone in the...

5 天之前 · Assembly Theory shifts the search for life from identifying specific molecules to measuring chemical complexity, offering a more universal and less Earth-biased approach.

6 天之前 · Humans have wondered for centuries whether we are alone in the universe — and a new study suggests that if alien civilizations have been trying to communicate with us, we mostly haven’t …

2025年12月13日 · 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 …

2026年3月10日 · 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.

2026年3月9日 · 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 …

2026年2月20日 · Extraterrestrial Life coverage from Scientific American, featuring news and articles about advances in the field.