If all goes well, JWST will allow us to witness events that occurred roughly 180 million years cosmic time (after big bang). Apparently this light arrives 13.6 billion years after it was emitted.
In my naivety I would expect the universe at that time to be roughly 180 million light years in radius, and the the light to take 180 million years to reach us. Apparently it takes 75x longer.
My guess is that we can attribute this to the universe more rapidly expanding in its beginning. Or maybe it's because space is stretching while the light is traveling towards us. Or is it because space and time are deformed according to laws or relativity?