Why the Solar System's Planets Orbit in a Flat Plane

minutephysics · Explainer · 3 min · 2014 · YouTube title: Why is the Solar System Flat?

Why it's here

HN commenters link it as a quick, intuitive explanation of angular momentum and why spinning clumps of matter flatten.

What it covers

A minutephysics explainer on why the planets orbit in a flat plane. It shows how conserved angular momentum flattens a collapsing cloud of matter into a disk.