Yes, I agree. But there are many forces acting on Systems in Space, and I doubt that there are any Systems that no other forces act on, by that I mean, no System that has only one force acting on it. Hi Ultra. Yes, and thanks for agreeing. Of course you're right, a picture, even if it represents a 3 dimensional picture, will always be 2 dimensional. Yes, Nasor. I was actually thinking of the picture of the Big Bang in Wikipedia. The lines that the Universe is moving in have obviously been drawn with a ruler. If you know of a picture without such straight lines, could you tell me where it is? Hi Impet. Do I take it that you are saying the Expansion of the Observable Universe (the only part, surely, we can really talk about) occurred in straight lines? Well, Impet, it's my opinion that there are no straight lines in Space, and I doubt anyone will agree with you if you try to tell them about these straight lines. Hi Woowoo. I'm impressed by your open mind. Myself, I don't think there ever was a Big Bang. If you think about it, Georges Lemaitre, who is generally credited with the Big Bang, On news that the Observable Universe had been found to be Expanding, assumed that the entire Universe was expanding, even though there is no evidence of this. (We can't see the entire Universe). I think Woowoo's got a point. I think you make a lot of sense, in a field of fantasies and fabrications... Newton taught us that Gravity was Universal, in his book on Universal Gravity. That means, of course, that an atom on one side of the Universe has a gravitational attraction to an atom on the other side (of the Universe). Einstein completed Newton. Einstein didn't prove Newton to be Wrong. And gravitational fields overlap constantly in Space. Voids are real, and their existence demonstrates structure, more than anything, to me. Well, we've alll been juiced in the mathematics of the Big Bang, but you can do anything in Math, which isn't actually a Science. Impet, let's stick to the Science of the situation, can we? These voids are real. Are you disputing their existence, Keith? I totally agreee that the Observable Universe is Expanding. But I'd like you to tell me how you know the entire Universe is Expanding? And GR is often represented as you describe, but that's something we have to live with. Well done, Ultra. You have raised a key question, how large...? As I say, Newton said Gravity never runs out, and that it is Universal. Good, Shadow. Yes, in my mind I see the Universe as a Vortex - going in. I was looking at the Hubble telescope's recent pictures, and it seemed to me tghat Space is made up of a network of Galaxies. I saw more Galaxies than anything else, which makes me think that if everything else in the Universe is going in, and if you go to Wiki you will see, under Vortex, that Galaxies are Vortices (plural of Vortex) - then we're probably going in also. What do you think of that? The bb? I'm sorry, Captain, but I don't really understand you? I'm new here, so tell me what the bb is? That's funny, 'cause I thought (and thought) that because nobody was there, to take a picture, that maybe it didn't happen. I know the Observable Universe is Expanding. How does it follow that therefore the entire Universe is Expanding? That's just an assumption, and assumptions are dangerous, in Science. Brilliant - Boris 2. You are in agreeement with me, Newton and Einstein. How can we convince these others, that the bounds off Gravity are endless. Gravity is real force, unlike the Big Bang and Dark Energy, which seem to be in trouble, lately... Or is that just me?