《科学》[Science]13年5月3日出版pdf全文

nero1981

% `( v( _0 @2 P# {" x% N7 n% cCOVER Stylized comparison of the inner solar system (top) and 1 I$ N! I8 o2 E0 K' ^" L/ r* z
Kepler-62 (bottom), a five-planet system about 1200 light-years away. Like our
# E8 t. U- b( O% }solar system, Kepler-62 hosts two planets in its habitable zone (depicted in 0 L8 u  j  |/ `% U3 A2 k
green), the region around a star where a planet could conceivably maintain 3 r) U& z) t# J6 t& F
liquid water on its surface. The special section beginning on page 565 + I! L7 v6 C: C2 [
summarizes what we currently know about extrasolar planets. Illustration:
  C0 F7 r/ J/ _6 j5 w, c+ kNASA/Jet Propulsion Laboratory–Caltech/T. Pyle " |/ |2 @" ^1 d

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