Posted: Jun 25, 2017 12:14 am
DavidMcC wrote:lpetrich wrote:...
He then claims that his electromagnetic theory of gravity can explain why the planets' orbits are approximately coplanar.
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He presumably ignores the fact that gravity also explains why the planets' orbits are approximately co-planar - they are all derived fron the same spun-up mass of gas and dust.
There was a nongravitational force involved here: collisions. Collisions between gas molecules and collisions between condensed objects from dust grains to full-scale planets.