Re: Question about how Hubble can see objects from soon after the Big
It is mathematically possible, but you have to understand the maths. Even if you do understand the maths, it's difficult to get your head round. It's the spacetime manifold that's expanding and the relative expansion is not limited to the speed of light. Weirdness ensues, for example nonconservation of energy.
http://math.ucr.edu/home/baez/physic...energy_gr.html
Noone knows how big the universe actually is, but measurements of its curvature seem to imply that it must be much bigger than its observable size.
http://atramateria.com/thesizeoft...atisvisible/
It might be infinite, or it might be finite but closed and not have an edge at all.
http://map.gsfc.nasa.gov/universe/uni_shape.html
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