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本帖最后由 细胞海洋 于 2012-11-23 21:59 编辑 " ~) B) k+ X0 h( v0 q7 V6 U$ {
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- `% A1 I2 \* Z) G2 SCOVER The lower hemisphere of a fast-spinning Earth shown 2 hours after a giant impact. Colors denote the silicate mantles and iron cores of Earth and the impactor. The debris evolves into a Moon-forming disk composed primarily of material from Earth's mantle, explaining the isotopic similarity between Earth and the Moon. In this model, the fast-spinning Earth is slowed by an orbital resonance between the Moon and the Sun. See pages 1040, 1047, and 1052. Image: Sarah T. Stewart 6 m K1 Q* f7 |# O* b% g5 W8 B
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发表于 2012-11-23 21:32
发表于 2012-11-24 00:04
