Astronomers have just discovered a new Earth-sized exoplanet around SPECULOOS-3, an 'ultracool dwarf' star as small as Jupiter, twice as cold as our Sun, and located 55 light-years from Earth. After ...
Add Yahoo as a preferred source to see more of our stories on Google. About 650 light-years from here, in the constellation Aquarius, lies the planetary nebula Caldwell 63, commonly known as the Helix ...
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