[ELI5] Why does the earth spin? How did it start spinning to begin with, why is it always the same speed and why does it spin at the speed it does?

Question

[ELI5] Why does the earth spin? How did it start spinning to begin with, why is it always the same speed and why does it spin at the speed it does?

In: 2

Answer 1

It goes back to the Big Bang. The Big Bang sent stuff flying around in all directions, because of gravity stuff started to get attracted to each other and because they were moving so fast, there was nothing to stop them so instead of colliding and stopping they started colliding and spinning, and since there is nothing stoping they kept rotating.