Extraterrestrial life - Wikipedia
Extraterrestrial life, or alien life (colloquially, alien), is life that originates from another world rather than on Earth. No extraterrestrial life has yet been scientifically conclusively detected.
Extraterrestrial life | Definition, SETI, & Facts | Britannica
2024年10月30日 · 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 questions, including ‘What are the basic requirements for life?’ and ‘Are there other planets like Earth?’
What's the best evidence we've found for alien life?
2023年10月28日 · There's no scientific evidence for aliens in the declassified UFO videos, in mutilated cows whose injuries are blamed on extraterrestrial activities or in purported alien bodies. Nor is there any...
Alien life in Universe: Scientists say finding it is 'only a ...
2023年9月29日 · Nasa's James Webb Space Telescope (JWST) recently detected tantalising hints at life on a planet outside our Solar System - and it has many more worlds in its sights. Numerous missions that are...
Do Aliens Exist? We Asked a NASA Scientist: Episode 5
2021年9月10日 · Extraterrestrial life has never been discovered, but that doesn’t mean it doesn’t exist. At NASA, astrobiologists like Lindsay Hays are trying to answer one of the most profound questions ever: Is there life beyond Earth?
The Search for Extraterrestrial Life as We Don’t Know It
2023年2月1日 · Life on other planets might not look like any beings we're used to on Earth. It may even be unrecognizable at first to scientists searching for it. Sarah Stewart Johnson was a college sophomore...
The search for extraterrestrial life - Encyclopedia Britannica
2024年10月30日 · The search for extraterrestrial life is most clearly grasped by imagining the reverse situation. For example, if humans were on Mars , examination of Earth for life with the full armory of contemporary scientific instrumentation and knowledge would be illuminating .