About 4.6 billion years ago, a giant shapeless cloud full of dust and gas condensed in one place due to the irresistible force of gravity.
This is how the Moon, the Sun and all the planets in our system are born.
However, something strange happens – from this shapeless nebula almost all the planets and their satellites somehow manage to arrange themselves to form a flat disk.
As MinutePhysics explains, all the planets in the solar system orbit within approximately 2 degrees in the same plane. Except for Pluto, because he wants to be special.
Why aren’t objects zipping about the cosmos in all kinds of crazy trajectories? Why does everything seem to orbit on (approximately) the same level? Watch this great video to find out.