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2014年4月18日 Science* Z& b, b2 t" o+ C
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" D/ Z( Q+ r/ K9 s7 qCOVER Artist's concept of Kepler-186f, a planet located ~500 light-years from Earth in the constellation Cygnus. The discovery of Kepler-186f confirms that Earth-sized planets exist in the habitable zone of other stars (that is, the range of distances from a star wherein liquid water might pool on the surface of an orbiting planet) and signals a major step closer to finding a world similar to Earth. See pages 249 and 277.
0 ?. }0 t8 v# h9 j7 P Image: NASA Ames Research Center/SETI Institute/Jet Propulsion Laboratory–California Institute of Technology % j) ]2 ^8 I' m
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