Can Someone Possibly See the Edge of Spacetime?

Our view of a small region of the Universe near the northern galactic cap, where each pixel in the image represents a mapped galaxy. On the largest scales, the Universe is the same in all directions and at all measurable locations, with the major difference being that distant galaxies appear smaller, younger, denser, and less evolved than the ones we find nearby: evidence for cosmic evolution with time, but no changes in isotropy or homogeneity. Credit: M. Blanton/SDSS-III

Our Big Bang could be just one region within an infinite, inflating multiverse. If we were born close to the cosmic edge, what would we see?

In all directions, in all locations, there seems only to be more Universe from our perspective, with the only edge to spacetime set by the limits of how far back in time we can see: all the way back to the Big Bang.

But what we understand our Universe to be may not be all there is; our Big Bang could just be one location in space and time where cosmic inflation ended, giving rise to a bubble universe within a sea of inflating space.

While we see no evidence for such an edge to the part of the Universe we can observe, it’s possible that someone born right up against such a bubble wall would indeed see an edge.

(Source: Big Think)