Eli5: Why does the Sun move through Space

Question

Hello, as above really. What causes the sun to move through space and also how did we work out it does?

In: 0

Answer 1

Everything in space moves. There is no such thing as a completely fixed point, and everything is moving relative to everything else. There wasn’t anything that caused the sun to start moving. The matter that makes up the Sun was moving before it became the Sun.