But, I just read that the universe is greater than 14.8 billion light years across,times 2.... So was is will light be travelling at a constant soon?
I’ve seen some big numbers for the size of the universe. Much greater than the 14 or so billion light years that we’re limited to. As I understsnd it, we will never be able to see anything outside that limit.
As to the constancy of the speed of light - I am skeptical that it has been constant over the billion of years the universe has been around. I’m really curious if some of this Dark Matterband Dark Energy stuff could be explained using a speed of light that changes as space expands.
Remember: Use none to of this to answer physics exams. And resist taking it to the bank.