Quote:
Originally posted by Archer
The universe, for our purposes is flat. If it is curved, it is so massive that for as far out as we can see, it's flat. And, considering we can see out pretty far, we can treat the universe as if it was flat.
To attempt to include conjecture where there is no evidence is akin to religion, not science.
|
But space does curve! Einstein showed that gravity is actually caused by the mass of objects causing a curvature of space.
If there was enough mass in the universe to stop expansion, then that would mean that the curvature of the universe is closed in on itself, the same way a black hole's gravity closes it off from the rest of the universe.
It is not religion to consider this kind of thing, scientists have to speculate in order to come up with theory.