Celestial mechanics...don’t ask me more than that lol
I’ve been watching these scientific vids on YouTube where they use AI generated video to create physicist Richard Feynman giving lectures based on books, articles and real lectures he gave. He has an incredible ability to make complex things understandable to a layman. These vids have given me a glimpse of understanding what special relativity, general relativity, space time, quantum physics, wave v. Particle physics, etc. are. Before these were just terms I had heard and was familiar with but now I have a very basic idea of what they mean. He lectures on the virtual physical impossibility of meaningful interstellar spaces travel. He gives his reasons as a Nobel winning physicist, who ranks up there with Einstein, why he thinks we never been and never will be visited by alien beings from outer space. This has changed my opinion on UFOs substantially.