The 6 Most Earth-like Alien Planets

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The 6 Most Earth-like Alien Planets

Message  gerardM le Dim 9 Aoû - 23:32

Howdy.

Scientific American magazine


To qualify as potentially life-friendly, a planet must be relatively small (and therefore rocky) and orbit in the “habitable zone” of its star, which is loosely defined as a location where water can exist in liquid form on a world’s surface.



The 6 Most Earth-like Alien Planets
Discovering the first true “alien Earth” is a long-held dream of astronomers. Recent exoplanet discoveries suggest that their dream will come true in the not-too-distant future
SCIENTIFICAMERICAN.COM|PAR ELIZABETH HOWELL,LIVESCIENCE

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