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- Sat Oct 13, 2007 12:58 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus, WHITE on BLACK (APOD 19 Sep 2007)
- Replies: 39
- Views: 14394
Iapetus shape and composition theory
How about another far-fetched theory ... On object struck it with such force that it penetrated the surface and lodged itself somewhere near the core of the planet. Some core matter was ejected during the impact but the "Wound" closed up, sealing some magma and some air into the core of th...