Thursday, September 06, 2018
"What Happens at the Edge of the Universe?" PBS
“What Happens at the Edge of the Universe?”
PBS Digital Studios explains “proper distance” and cosmic distance. But essentially the expansion fo space (faster than light) makes it impossible to make any progress toward getting toward any observablr edge. There will ways be galaxies that we could never get any information from.
Here’s a supplementary piece on the geometry of space from the University of Texas.