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To be considered Earth-like, a planet must be rocky, roughly Earth-sized and orbiting Sun-like (G-type) stars. It also has to orbit in the habitable zones of its star—the range of distances from a star in which a rocky planet could host liquid water, and potentially life, on its surface.
originally posted by: Flyingclaydisk
a reply to: 727Sky
One of these days...mankind is finally going to accept the notion that Earth is just a single atom in a collection of atoms which make up a molecule, in a collection of molecules which make up a single cell, in a collection of billions of cells which make up an organism, in a collection of billions of organisms which make up a universe, in a collection of billions universes which make up a multiverse, in a collection of billions of multiverses which make up a...who knows, but it goes on for infinity.