Earth-Like Planets Are Way More Common Than You Think

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Did Earth get certainly lucky, or are there more habitable planets? As life on Earth started in the oceans, researchers accept that in order to discover alien life, they must find a planet with liquid water on it. In order for a planet to host liquid water, it needs to be in its solar system's "habitable region": This is the zone that's not too close to its star for water to boil away and not too far for water to freeze. Occasionally stated as the "Goldilocks zone", this region is different for every solar system; it all depends on the temperature of the star and its size. Learn more in the video below:






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