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- 积分
- 17983
- 威望
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7 `0 r& ^* o5 r) uCOVER Stylized comparison of the inner solar system (top) and & o/ O \1 _8 H4 I7 _, L1 Z
Kepler-62 (bottom), a five-planet system about 1200 light-years away. Like our 4 G0 y/ }- \0 X( X& M) |$ |
solar system, Kepler-62 hosts two planets in its habitable zone (depicted in & {! z" t. G0 Q8 @
green), the region around a star where a planet could conceivably maintain & H0 a# b- k- F& o
liquid water on its surface. The special section beginning on page 565 & T3 N9 d- a; g
summarizes what we currently know about extrasolar planets. Illustration: : }: A: e! r( Z% a8 P" f* W4 ]- Y) }
NASA/Jet Propulsion Laboratory–Caltech/T. Pyle * S. d U' d4 u% M5 F! x
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发表于 2013-5-3 13:11
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发表于 2013-5-3 16:20
