conformal time
amount of time it would take a photon to travel from where we are located to the furthest observable distance provided the universe ceased expanding
en-GB/kɒnfɔːml ˈtaɪm/
en-US/kənˈfɑɹməl ˈtaɪm/
amount of time it would take a photon to travel from where we are located to the furthest observable distance provided the universe ceased expanding