23 ms·
It’s not that we can see that far, it’s that what we see has moved away from where it was when it produced the light we see now.
by ctdonath 7y ago
It’s not that we can see that far, it’s that what we see has moved away from where it was when it produced the light we see now.
- mannykannot 7y agoIndeed; the issue is covered much more clearly in the article from which the most relevant illustration was taken: https://calgary.rasc.ca/redshift.htm https://calgary.rasc.ca/redshift.htm
- jon_richards 7y agoIt’s more complicated than that. It hasn’t moved that far because it can’t move faster than the speed of light. If you start 13B light years away and move away at the speed of light, you’d still only be 26B light years away by the time I saw your original light.