Our Flat Solar System

Why is our solar system flat? We started off as a shapeless blob of gases after the Big Bang. How did our solar system flatten out? From Saturn's rings to other galaxies, it turns out that "flatness" is common in our 3D universe. It has to do with collisions.

MinutePhysics breaks down the mathematics for our 3D-thinking brains:

Scroll down to load more…