《科学》[Science]13年5月3日出版pdf全文

nero1981

' X" M# \4 D' \% E: N3 ]COVER Stylized comparison of the inner solar system (top) and 6 M1 H( Q6 N# C! a- n
Kepler-62 (bottom), a five-planet system about 1200 light-years away. Like our & l0 d1 t$ K8 q8 N: Q
solar system, Kepler-62 hosts two planets in its habitable zone (depicted in
' o( l0 Z" |; K: Pgreen), the region around a star where a planet could conceivably maintain
% O9 N  f% Q4 j0 z' X, ]+ H# lliquid water on its surface. The special section beginning on page 565
* R* y- q7 C% Q9 L5 Ssummarizes what we currently know about extrasolar planets. Illustration: 9 S4 x+ {5 [% e' d" v5 U- D
NASA/Jet Propulsion Laboratory–Caltech/T. Pyle 4 }2 c0 ~8 o; _! }( N+ \

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