Carl;
Oh well looks like it won't be long before we find it all out …
Quote:
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Future NASA missions will help gather more detailed data. The Gravity Recovery and Interior Laboratory, or GRAIL, is a NASA Discovery-class mission set to launch this year. The mission consists of twin spacecraft that will enter tandem orbits around the moon for several months to measure the gravity field in unprecedented detail. The mission also will answer longstanding questions about Earth's moon and provide scientists a better understanding of the satellite from crust to core, revealing subsurface structures and, indirectly, its thermal history.
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It'll be good to get more data.
I must admit, I secretly harbour doubts about the whole moon origin theory (yep an opinion .. no evidence).
I've been looking at some of the latest Cassini data/picckys and one has to wonder just what forces and process steps actually occur, in the aggregation (clumping) of orbitally floating material, ultimately resulting in something big .. like a moon …
… And then how the heavy stuff like iron ends up in the middle in a molten/liquid state.
I understand the classic explanation .. but data about Saturn's rings should be showing us the real thing. I'm not so sure its obediently following this theory, though
Cheers