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  2. Extraterrestrial life - Wikipedia

    en.wikipedia.org/wiki/Extraterrestrial_life

    [1] [2] [3] The Drake equation speculates about the existence of sapient life elsewhere in the universe. The science of extraterrestrial life is known as astrobiology. Speculation about the possibility of inhabited worlds beyond Earth dates back to antiquity.

  3. Rare Earth hypothesis - Wikipedia

    en.wikipedia.org/wiki/Rare_Earth_hypothesis

    The Rare Earth hypothesis argues that planets with complex life, like Earth, are exceptionally rare.. In planetary astronomy and astrobiology, the Rare Earth hypothesis argues that the origin of life and the evolution of biological complexity, such as sexually reproducing, multicellular organisms on Earth, and subsequently human intelligence, required an improbable combination of astrophysical ...

  4. Scientists find Earth-like planet that could be home to alien ...

    www.aol.com/news/scientists-earth-planet-could...

    Scientists have found a new Earth-like planet that could support alien life – just 40 light-years away.. The planet is a remarkable discovery in the search for habitable worlds: it is slightly ...

  5. Planetary habitability in the Solar System - Wikipedia

    en.wikipedia.org/wiki/Planetary_habitability_in...

    Planetary habitability in the Solar System is the study that searches the possible existence of past or present extraterrestrial life in those celestial bodies. As exoplanets are too far away and can only be studied by indirect means, the celestial bodies in the Solar System allow for a much more detailed study: direct telescope observation, space probes, rovers and even human spaceflight.

  6. Aliens May Well Exist in a Parallel Universe, New Studies Find

    www.aol.com/news/aliens-may-well-exist-parallel...

    Should the search for alien life in our universe come up empty-handed, it might be worth checking in on a neighboring universe instead. According to a new pair of studies in the journal Monthly ...

  7. List of potentially habitable exoplanets - Wikipedia

    en.wikipedia.org/wiki/List_of_potentially...

    [3] [1] Note that inclusion on this list does not guarantee habitability, and in particular the larger planets are more unlikely to have a rocky composition. [4] Earth is included for both comparison and reference, while Venus and Mars are included for reference only.

  8. Could aliens (or humans) travel to nearby stars without using ...

    www.aol.com/news/could-aliens-or-humans-travel...

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  9. Firstborn hypothesis - Wikipedia

    en.wikipedia.org/wiki/Firstborn_hypothesis

    There is no reliable or reproducible evidence that aliens have visited Earth. [3] [4] No transmissions or evidence of intelligent extraterrestrial life have been observed anywhere other than Earth in the universe. This runs counter to the knowledge that the universe is filled with a very large number of planets, some of which likely hold the ...