Saturn and its rings, our solar system, the Milky Way – Why are they (and the bodies orbiting them) in such a neatly flat shape and not more akin to how electrons are often depicted orbit an atom in all directions?
In: Physics
There is something called the conservation of angular momentum, basically as things get dragged together by gravity they merge slightly off-centre so cause the combined object to spin, as new matter is added to the slightly spinning object they add to the spin depending which side of the object they merge with.
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