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2014年4月18日 Science
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" _* J) l/ s, K( S& }+ J3 _COVER 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 _2 `# X( l9 Z- C* I, W
Image: NASA Ames Research Center/SETI Institute/Jet Propulsion Laboratory–California Institute of Technology , c8 G6 L# S/ @8 s
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发表于 2014-4-18 20:06
