Hubble has discovered signs that Nasa's newly discovered planets could support life
Three potentially habitable Earth-sized planets in another solar system are likely to contain substantial amounts of water, say astronomers. The discovery by the Hubble Space Telescope increases the chances of life evolving on planets orbiting Trappist-1, a dwarf star 40 light years from the sun. Each of the worlds orbits in the star's "habitable zone", the narrow corridor where temperatures are mild enough to permit bodies of surface water such as lakes and oceans.
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