One of my favorite subjects to post about is outer space.
These are a couple of hypnotic animated GIFs I saw on FFFFOUND! showing the solar system in motion.
This one shows the motions of the planets & moons in relation to each other, as they orbit the Sun.
I'm not sure how accurate the relative motion of this animation is, but it's a more hyperdimensional view of the paths of the planets around the sun.