Space, the Universe and everything
Sat pondering today, as you do, it suddenly dawned on me that I don't really understand space. I've been watching "The Wonders of the Solar System" on TV, and that has made what is going on a lot easier to understand, but what is beyond that?
That is, I understand our Solar System, but where does that fit into the bigger picture? I hear of the Milky Way, but I'm not entirely sure what it is. Where do we fit into "the Universe". Is the Universe one, or are there many? Are those 'swirls' you see in Hubble pictures other Universe's or part of ours? What are Galaxy's? Do Universe's fit in Galaxy's, or vice versa, or not at all? I presume our Solar System fits into a Universe or Galaxy somewhere, but where? Is our Sun the centre of a Universe, or just our Solar System?
I did some Googling, but I think I need something easy to follow to understand what is actually going on beyond our own Solar System 'cos it's dawned on me how much I really don't understand the subject of space.