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Showing posts with label seven Earth-sized planets. Show all posts
Showing posts with label seven Earth-sized planets. Show all posts

Thursday, February 23, 2017

A system with seven earths of terrestrial size

A team of astronomers has revealed the first system known to harbor seven Earth-sized planets around an individual star (called TRAPPIST-1b, c, d, e, f, g and h). Three of these planets lies within the habitable zone, the area around the star where a rocky planet could hold liquid water on its surface, a key to life as we know it.