How about light from stars and galaxy’s that are too young for us to see ?
Given the standard model of star and galaxy formation that would also apply to our galaxy, there are a number of examples in which these stars are too far away, given their age, for us to actually see.
Maybe, you can evoke the “Allmendream” belt to resolve this paradox.
There’s always a “saving device”, like the “Oort cloud”, to rescue an assumption / circular reasoning.
The ones that are too young for us to see? Easy. We don’t see them. Young stars from 100000 light years away that we do see and that look young are 100000 years older than the light we observed.
You simply must tell me more about this!