Determining distance (split from Cosmic Megastructure Challenges Theories of the Universe

[Luc Turpin]

 

Help required! Can I determine the age of the Hercule-Corona Borealis Great Wall by its” light-year distance from us? I know that “light-year” measures distance, not time. However, it has that “year” component to it. So, if Hercule-Corona Borealis Great Wall is 10bn light-year away from us, does it mean that light took 10bn years to get to earth? Or is there something else like relativity and gravity to take into account! Hercule-Corona must be old, but how old in comparison to the age of the universe – 13.8bn years? If it is very old and thus created very early in time-universe then how did a superstructure like Hercule-Coronal get to 10bn light-years long by 7.2bn light-year wide in such a short period of time? It is the size that we currently see it, which is in fact 10bn years ago! Right? And in the early years of the universe, are we not supposed to only see relatively small-simple structures rather than large-complex ones?