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theguardian - 7 days ago

Earth-sized planet spotted orbiting small star with 100 times sun’s lifespan

Speculoos-3b, 55 light years away, is only second planetary system to be found around an ultra-cool red dwarfAstronomers have discovered a new Earth-sized planet orbiting a small, cool star that is expected to shine for 100 times longer than the sun.The rocky world, called Speculoos-3b, is 55 light years from Earth and was detected as it passed in front of its host star, an ultra-cool red dwarf that is half as hot as the sun and 100 times less luminous. Continue reading...


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