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

No. 5: Gliese 163 c

Photo Credit: Hervé Piraud

Earth Similarity Index: 68%

Gliese 163 c is the biggest Earth-like planet yet discovered. Although the 140°F temperature on Gliese 163 c, would be a little too much to bare for the average person, microorganisms could surely thrive in this environment.