Many books say "this model of the universe is infinite in nature"(adsbygoogle = window.adsbygoogle || []).push({});

Say the Standard Big Bang Model can be infinite in nature if it has hyperbolic/ flat space.

My questions are:

1. how can an infinite universe begin with a finite singularity?

2. a universe with spherical geometry is finite in space but has no edge because it comes back on itself.

(analogy being the spherical earth with no edge- analogy is dodgy because Earth exists in 3-D space where as we shouldn't view our universe as existing in a higher dimension)

What does edgeless mean in an infinite universe? I guess my question is- what characterises/ quantify/ qualify an infinite universe?

(eg. is it the maths?)

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# The infinite universe

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