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  1. Oct 28, 2023 · 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...

  2. Nov 25, 2023 · The universe is big and old, and it is highly plausible that alien civilizations have evolved, based purely on statistical probabilities. Fermi posed his question in an era of technological ...

    • 1976, The Viking Mars landers detect chemical signatures indicative of life. Tests performed on Martian soil samples by NASA’s Viking landers hinted at chemical evidence of life.
    • 1977, The unexplained extraterrestrial “Wow!” signal is detected by an Ohio State University radio telescope. In August 1977 an Ohio State University radio telescope detected an unusual pulse of radiation from somewhere near the constellation Sagittarius.
    • 1996, Martian “fossils” are discovered in meteorite ALH84001 from Antarctica. NASA scientists controversially announced in 1996 that they had found what appeared to be fossilised microbes in a potato-shaped lump of Martian rock.
    • 2001, More rigorous calculations connected to the 1960s “Drake equation” suggests that our galaxy may contain hundreds of thousands of life-bearing planets.
    • UFO 'turning point' Following an upswing in sightings of UAPs in 2021, experts told Space.com in January 2022 that the next 12 months could be important for the investigation of such mysterious objects.
    • Declassified UFO reports. A popular theme among UFO enthusiasts is how much various governmental agencies know about these mysterious objects and their possible origins.
    • Another Fermi paradox proposal. Where are all the aliens? In May 2022, two scientists proposed a disturbing solution to the so-called Fermi paradox: Maybe a civilization intelligent enough to develop space travel would eventually develop to a point where their energy demands would outpace innovation, resulting in the collapse of that civilization.
    • A climate alert to aliens. In May, researchers aimed to send a message to notify aliens of Earth's climate crisis and possibly request aid. The message was devised by a group called Messaging Extraterrestrial Intelligence (METI) International, which wants to send a message encoded within a radio signal to the TRAPPIST-1 planetary system, which hosts at least seven Earth-like planets.
  3. 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?

  4. Nov 10, 2021 · November 10, 2021. 8 min read. How Scientists Could Tell the World if They Find Alien Life. Sparked by major advances in their field, astrobiologists are grappling with how best to discuss...

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