The exciting part for me is that there are new frontiers out there. It isn't all known. Despite centuries of smart people looking at these things, we still don't have all the answers. That means there may be more cool discoveries out there. I always think it would be neat if real life ended up like sci-fi, with warp drives and gravitational manipulation and holo-decks, but so many of these topics look like closed books. Then stuff like this happens, and it opens to doors to subtle mis-understandings of our universe. It isn't like we thought? Oh, no, it doesn't work at all like we thought, it's different entirely.
Fun stuff.
Dan