On Tuesday, 1 January 2019 09:54:16 UTC-5, Chris L Peterson wrote:
On Tue, 1 Jan 2019 00:19:24 -0800 (PST), RichA
wrote:

No, we are on the surface. The surface is "now". The center is t=0
(actually, it is (0,0,0,0), the location of the Big Bang). The past is
inside the sphere, where it is not accessible to us.

If we are to take this literally, then the universe isn't flat, it has no end-point (for us) and building bigger telescopes means little.

I don't follow. Why is there no value in building instruments that
extend how far we can see, in both space and time?

Stupidly, I was actually hoping that they could build scopes large enough to see the brightest objects at the edge of the known universe. Unfortunately, if we are on a sphere, there is no edge, we'll see to a certain distance and that'll be it. Building larger scopes now will enhance what we can see however. However, I'm not even sure I buy the sphere idea anyway.