Extraterrestrial life | Definition, SETI, & Facts | Britannica
2024年9月5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 · Seager believes we'd confirm the existence of alien life only with sample-return missions — collecting samples from another planet or moon and bringing them back to Earth for study, in-situ ...
Extraterrestrial life - Search, Habitability, Astrobiology | Britannica
2024年9月5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 .
Extraterrestrial Life - Scientific American
2024年8月22日 · Mysterious “leopard spots” on a Martian rock could be evidence of extraterrestrial life—or of mere lifeless chemistry. Finding out the truth may require bringing the rock back to Earth
Extraterrestrial life - Exoplanets, Habitability, Astrobiology
2024年9月5日 · Extraterrestrial life - Exoplanets, Habitability, Astrobiology: For thousands of years humans have wondered whether they were alone in the universe or whether other worlds populated by more or less humanlike creatures might exist.
Extraterrestrial life - Wikipedia
Extraterrestrial life, or alien life (colloquially, aliens), is life which does not originate from Earth. No extraterrestrial life has yet been scientifically conclusively detected. Such life might range from simple forms such as prokaryotes to intelligent beings, possibly bringing forth civilizations that might be far more advanced than humans.
Alien life in Universe: Scientists say finding it is 'only a ... - BBC
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...
Alien life is out there. Can AI find it? - National Geographic
2 天之前 · In fact, researchers now believe that AI can be useful in hunting for not merely new worlds but also conditions most likely to host life. (Earth’s oceans may hold the key to finding life beyond ...
The Search for Extraterrestrial Life as We Don’t Know It
2023年2月1日 · Scientists are abandoning conventional thinking to search for extraterrestrial creatures that bear little resemblance to Earthlings. By Sarah Scoles. Life on other planets might not look like...
NASA Research Gives Guideline for Future Alien Life Search
2014年9月11日 · The researchers carefully simulated the atmospheric chemistry of alien worlds devoid of life thousands of times over a period of more than four years, varying the atmospheric compositions and star types.