An artist’s impression (from Wikimedia Commons) of a “superhabitable planet” — that is, a planet on which the conditions for the emergence and evolution of life are even more optimal than on Earth. In this image, the reddish hue represents vegetation.
When I was growing up, although we assumed that other planets existed out in deep space we actually knew of none until 1989. Now, almost 3500 have been catalogued.
But only ten of those, thus far, have been classified as potentially habitable.
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