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earthman2110
2004-Mar-01, 12:23 AM
I know that sometime back in high school someone must have explained it to me, but why is our solar system "flat"? what makes all of the planets rotate around the sun in the same plane, and what makes MOST of the planets rotate pretty much parallel to the sun?

Ut
2004-Mar-01, 12:26 AM
Conservation of angular momentum. Before the solar nebula began to collapse, it would have had some net spin along some axis. As the cloud collapsed, it spun faster, and flattened out. This is the same phenomenon that occures when you spin a ball of pizza dough (although, sans the stretching due to the pizza maker). The exact same thing causes the Earth (and other planets) to be flatter at the poles and bulkier at the equator.

Brady Yoon
2004-Mar-01, 02:53 AM
Conservation of angular momentum. Before the solar nebula began to collapse, it would have had some net spin along some axis. As the cloud collapsed, it spun faster, and flattened out. This is the same phenomenon that occures when you spin a ball of pizza dough (although, sans the stretching due to the pizza maker). The exact same thing causes the Earth (and other planets) to be flatter at the poles and bulkier at the equator.

nice explanation =D>