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Universe Shaped Like A Soccer Ball?
Rabid Rob writes "According to a New Scientist article, and prompted by data from NASA's Wilkinson Microwave Anisotropy Probe (WMAP), it's suggested the universe could be shaped like a soccer ball - the 'cosmic microwave background' has fluctuations, and a possible conclusion is that 'our Universe seems like an endlessly repeating set of dodecahedrons.' Oh yeah, the universe is only 70 billion light years across, so better buy up the real estate now while it's still cheap!" The NYT has more information (free reg. req.) on this theory, which is quickly being refuted by Wernstrom-like rival researchers.
Actually a soccer ball is not a dodecahedron.
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It is a mix of Hexagonal and Penatagonal shapes, more commonly seen as a C60 (carbon60) or Bucky-Ball.
Example here http://www.udel.edu/fth/java/MoleculeViewer/bucky
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A big foot. A really big foot.
stuff
Space is big. Really big. You just won't believe how vastly hugely mindbogglingly big it is. I mean, you may think it's a long way down the road to the chemist, but that's just peanuts to space
It is part of the Universe.
Imagine a square sheet of rubber (so we can stretch, bend as we like). It has a finite area, and four edges. We choose one edge and glue it to its opposite edge. Now if you start from one point and draw a line in the right direction, you'll get back to where you started. Otherwise you'll just spiral around until you hit an edge.
Now we take the two circular edges and we glue them together, giving a donut (a torus). Now if you go in [what you see as] a straight line in any direction, you'll never reach an edge. The surface of the donut doesn't have any sides in the way the original sheet of rubber did, but it still covers a finite area.
N.b. The problem with this example is that it's difficult to think of just the surface of the donut, without imagining it being 'in' some larger space such as the 3D world.
Now if you want a headache, try to imagine doing this starting not with a square, but rather a cube, and joining opposing faces together. The first pair is easy - you get a sort of square donut shape. The second pair gives you a donut with an inner donut removed - something like the inner tube in a tyre.
The third one is the real bugger - you have to imagine joining the inner surface of the tube to the outer one, without going through the tube. I've seen a video that included a representation of what a similar manouvre (sp?) would look like in the 3D world that the cube started in, and I still can't fully get my head around it.
No matter what direction you moved in this weird twisted-cube-thingy, you'd never see an edge. It would give you the same effect as if there were an infinite array of cubes , with the exact same thing happening in each one. When you reach the edge of one cube, you ust move into the next one ... which is identical to the last one.
This article says that the Universe is doing the same sort of thing, only starting with a dodecahedron instead of a cube (i.e. 6 pairs of faces instead of 3). Don't seriously try to picture this, or your head'll explode ...