As soon as our solar system was made from a spinning
cloud of dust and gas, it came about to form in such a way that all planets
assemble on a single plane. But through all of 3D space to select from, why did
it turn out plane? Observing that plenty of other arrangements in the
Universe are flat, too, this Minute Physics video attempts to describe why. The
answer is grounded on the way particles in huge dust and gas clouds travel and
strike, as well as a coincidence of the fact that we occupy a 3D Universe. But
at that fact, watch the video, since it clarifies it way, way better than I
ever can. [Minute Physics]