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> scientists have already ruled out a universe with a "radius" less than some ridiculous number (like billions of light years) How is billions of light years a
by jobigoud 8y ago
> scientists have already ruled out a universe with a "radius" less than some ridiculous number (like billions of light years)
How is billions of light years a ridiculous number? Even the observable universe is bigger than that, so the full universe could be many many times bigger.
Since you can't see past the observable universe you wouldn't be able to see the double copies.
- stcredzero 8y agoWe know from analysis of the cosmic background radiation, that the universe is at least 150 times the size of the observable universe, which puts the minimum diameter of actual universe in the range of 10 to 15 trillion light years. It could be much larger than that, however.