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Artist’s impression of the TRAPPIST-1 planetary system - This artist’s impression shows the view from the surface of one of the planets in the TRAPPIST-1 system. At least seven planets orbit this ultracool dwarf star 40 light-years from Earth and they are all roughly the same size as the Earth. Several of the planets are at the right distances from their star for liquid water to exist on the surfaces.

More information: www.spacetelescope.org/images/heic1713a/

Credit:
ESO/N. Bartmann/spaceengine.org, tags: mögliche äußeren planeten von - Hubble Space Telescope / ESA via Flickr