That's true, the Sun has no atmosphere such as Earth, science says the Moon orbits because of the balance between inertia and gravity, constantly falling but never falling, understanding this, the Earth would crash into the Sun because the Sun has no atmosphere, the massive gravitaional pull of the Sun would have already crashed the Earth in it.

According to science the Sun and Stars are the same and therefore don't move, Earth moves around the Sun, hence, where ever the Earth is around the Sun, we should not be able to see the same constellations, there would be a point when the Earth would be on the other half/side of the Sun the Earth would see different constellations but that's not the case. And if the Earth did spin, WE would all be dizzy by now!