The 8 Most Earth-Like Planets Scientists Have Discovered…So Far

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No. 1: Gliese 581 g

Photo Credit: NASA Blueshift

Earth Similarity Index: 82%

Gliese 581 g, the fourth planet in its system, has had a rocky journey since it was first discovered. At times, its existence was denied, only to be resurrected once more, and at one point it was even awarded with a 92% similarity to Earth. Although the percentage has now dropped to 82%, the Gliese 581 g is still the most Earth-like planet out there.

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