Water could be present on some of the Earth-sized planets orbiting the dwarf star TRAPPIST-1, according to work from an international group of astronomers. They utilized the NASA/ESA Hubble Space Telescope to estimate substantial amounts of water could be present in the outer planets, including three within the habitable zone. This boosts the possibility those planets are livable. Related:
from Inhabitat - Green Design, Innovation, Architecture, Green Building http://inhabitat.com/first-hints-of-water-detected-on-earth-sized-trappist-1-planets
via Inhabitat
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