Question Earth Moon Origin

[Catastrophe]

Billslugg, some of these might interest you:

gaia collision video - Bing

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www.bing.com

There is another somewhere I have mislaid. It shows diagrams at intervals like 1 minute, 10 minutes, 1 hour, 4 hours . . . . . . something like that.

Cat

 

[billslugg]

The galaxy video is mesmerizing. The interaction really tore the tiny galaxy to shreds. First it makes it a needle then a cloud. Very interesting.

 

[Catastrophe]

If you put balloons on the surface of the pool water and pull the plug they will simply gather together in the center. If they pool is big enough, say hundreds of miles across, and is not located on the equator, then the Coriolis force will result in the bunch of balloons rotating. The amount of angular momentum of any such gathering is proportional to its area. A small knot within a large assemblage will have only a tiny angular momentum, not sufficient to explain the Moon's. This pretty much rules out coformation from dust knots. It leaves collision or capture. Collision is far more likely as there are many spots on Earth where a good hit would make a Moon. There are not a lot of spots the Moon and a third body could do a dance resulting in the capture of the Moon. Collision requires two bodies, somewhat rare. Capture requires three bodies, extremely rare. Also, the Moon crust and Earth crust are identical. This rules out capture. Collision is the only one that can account for all the data. There are still some nagging details they can't figure out.

Billslugg

There are still some nagging details they can't figure out.

Are you now happy with the 1%/13% "problem"?

Cat