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- 积分
- 17983
- 威望
- 17983
- 包包
- 26159
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f' K+ n: e+ K7 u( e* ~4 _4 w$ pCOVER Stylized comparison of the inner solar system (top) and & r1 z/ a; X6 g( k: Z; w- G& g$ n, G* y
Kepler-62 (bottom), a five-planet system about 1200 light-years away. Like our
! ~3 v0 }3 Q# fsolar system, Kepler-62 hosts two planets in its habitable zone (depicted in ( a. V, H \; @9 d4 m0 i2 `: A
green), the region around a star where a planet could conceivably maintain
4 {. [" e# R& |4 L, h. l% Eliquid water on its surface. The special section beginning on page 565 # e( N. E2 Y& i6 l1 w6 L7 @9 r6 V
summarizes what we currently know about extrasolar planets. Illustration: 1 H3 O: V* P' r0 I, J; f
NASA/Jet Propulsion Laboratory–Caltech/T. Pyle ( _% J3 J/ T# l4 c% q9 ]
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发表于 2013-5-3 13:11
