Been learning more about the Universe from the Interweb. Did you know it is full of plug holes. On this side of the plug holes, lots of matter swirls round clockwise and gets sucked in and it comes out the other side as don't matter, [stuff we cant see]. Dont worry though cos on the don't matter side there are plug holes where the stuff at that side swirls round anti-clockwise and comes back out this side as matter. When it comes back out, it forms light ears known as Galaxies. Isnt nature brilliant!