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The Earth-like Planet Gliese 581c (Artist's Impression)

The Earth-like Planet Gliese 581c (Artist's Impression)

Artist's impression of the five-Earth mass planet, Gliese 581 c, found in the habitable zone around the red dwarf Gliese 581, with the instrument HARPS on the ESO 3.6-m telescope.

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ESO

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Twice as big in volume as the Earth, HD 40307 g straddles the line between "Super-Earth" and "mini-Neptune" and scientists aren't sure if it has a rocky surface or one that's buried beneath thick layers of gas and ice. One thing is certain though: at eight times the Earth's mass, its gravitational pull is much, much stronger.
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HD 40307 g
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VLT image of exoplanet HD 95086 b
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Comparison between Earth and Kepler-452b and their host stars
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Artist’s rendition of the relationship between the composition of the atmosphere and transmitted colors of light.
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The free-floating planet CFBDSIR J214947.2-040308.9
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Explore Alien Worlds

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A planetary tour through time. The ancients debated the existence of planets beyond our own; now we know of thousands.

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