Sup guys,

I have to more science qestions -

1) How does light even move? I refuse to believe it moves itself.
2) How many types of forces are there in existence? I'm begining to think the answer is infinite because it takes atleast 1 force to create another(not sure though)...
3) Since the closet start(apart from the Sun) is around trillions of light years away doesn't this mean that our night sky is outdated? Because by the time the light gets here the start would have died/blown up...

Thanks.