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Sep 10, 2021 · Do aliens exist? 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?
Recent advances in three main areas have boosted astrobiologists’ optimism that we could be on the brink of discovering the first signs of extraterrestrial life: extremophiles, exoplanets and robotic exploration.
Extraterrestrial life, or alien life (colloquially, alien), 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.
Jun 7, 2023 · Where might aliens exist? It’s possible that there is alien life within our Solar System. As we’ve learned from NASA’s extensive Mars exploration program and missions from other space agencies, the red planet was once a warm, watery world that could have been home to life. Although we haven’t found signs of it yet, it’s still possible ...
Oct 28, 2023 · 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 ...
- Patrick Pester
Dec 24, 2020 · Life on other planets might not leave the same biological signatures as terrestrial organisms, making them difficult to spot from our vantage point.
Sep 29, 2023 · Thirty years ago, we had no evidence of planets orbiting other stars. Now more than 5,000 have been discovered, which astronomers and astrobiologists can study in unprecedented detail.
