Monday, March 15, 2021

Potentially habitable exoplanets, ranked from best to worst by the Earth Similarity Index (ESI), which is a measure of Earth-likeness based on stellar flux and planet size. Mars, Jupiter, Earth, and Neptune are shown for scale. [1920 x 1080] (Image credit: PHL/UPR Arecibo) via /r/spaceporn

No comments:

Post a Comment