"Pluto is dead" - Mike Brown, It's official |
"Pluto is dead" - Mike Brown, It's official |
Aug 24 2006, 01:58 PM
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Member Group: Members Posts: 531 Joined: 24-August 05 Member No.: 471 |
-------------------- - blue_scape / Nico -
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Guest_Myran_* |
Sep 1 2006, 01:41 PM
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#2
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Guests |
QUOTE Alan Stern wrote: I myself am not convinced of the entire scenario. I am not entirely convinced of this scenario either. One detail that makes me wonder are the fact that the disc where the planets formed should have been thinner at the outer edge. Yet Uranus have got 14 earth masses whereas Neptune got 17. But there could of course have been a thicker belt of KBO's that Neptune gobbled up when it migrated outward and so gained more mass. The KBO's are after all just that, planet bulding blocs and if there was enough of them and we smashed them together we'd end up with something quite similar to Uranus or Neptune: A small rocky core surrounded by a vast and very deep ocean and perhaps even a similar atmosphere, at least it would have the methane. If this scenario would be correct, then Chiron and Pluto simply are the leftovers which happened to survive with Pluto in resonance with Neptune and Chiron flipping back between Uranus and Saturn. |
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