The Propagation of Gravity

Einstein came up with a few tests for his theory. These are ways that we can test if this theory is correct. One of them was he predicted that Mercury, the procession of Mercury should show that his equations were correct because of the propagation of gravity. Now, I'm going to come back to Mercury. Oh, I've got about Mercury. Yes. It changes its orbit changes as it goes around the sun. This was actually pretty many, many reasons Einstein was so fantastic.