ANSWERS: 3
  • Eoghan, I'm sorry... but you have to be 14 to use this site. Good luck with your astronomy studies!
  • Hmmm! Well, as best we can tell, the universe IS finite, yet unbounded. Maybe it IS a huge, doughnut-shaped torus which is twisted into a mobius shape in five dimensions! Who knows? :))
  • Anything is possible, but generally, the universe chooses the simpler designs. Ergo, Occam's Razor. I suspect the universe is more like the skin of an inflating 4-D balloon. And the Milky way is just a spot on that skin.

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