By that, I mean, why do planets always orbit… horizontally(?) around the sun. Why not vertically? Space is a 3D space, I’d course. So why would the planets not end up going up as well as sideways?
Edit: Space science is a lot more complicated than I thought, and I am here for this rabbit hole. Ty everyone for your answers so far!
In: 2352
It minimises the kinetic/gravitational energy of the system for a given angular momentum. Angular momentum and energy are both conserved, but energy can be (and usually will be, if possible) transformed into heat.
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