According to relativity, from a photon's frame of reference time is instantaneous, correct? So in an instant a photon would, to its frame of reference, experience being absorbed immediately after its creation, as well as hundreds of years of travel through space in the same instant. Say hypothetically one specific photon would never be absorbed. Perhaps most mass in the universe is converted to energy and there is nothing that would absorb it. If it kept on going forever (whether or not it would in reality) wouldn't it experience infinite amount of time instantaneously? How would that even be possible, since an instance has an end but infinity doesn't? I apologize if this question's premises are too out of line to answer.