Currently, it is estimated that the visible universe is about 13.7 billion lightyears in radius. Because of the Big Bang theory we get the impression that there isn't any matter beyond that distance. But there are people who think that the universe is infinite in size, or perhaps trillions of lightyears across, and that we are only seeing a small part of it. Since the whole thing is expanding, then it only appears like we are in the center of a big explosion.
What would it take to look beyond the edge of the visible universe? Out to 20 or 30 billion lightyears? Because of lightspeed delay, we would be seeing matter when it was in a superdense state. It would also be hyper-redshifted, maybe into the microwave, radio, or ultra-long wavelengths.
So, what kind of telescope (size, capabilities) could take look at the deep DEEP field? Anyone?
Deep Astronomy