Have you heard about Roger Penrose’s Cyclic Conformal Cosmology? Our universe – from Big Bang to its demise as a vastly expanding thermal equilibrium – is just one eon of a series of eons.
How many? Who knows?
From the perspective of light, there is neither time nor space. Reality is instantaneous. At the very instant of the Big Bang, when the entire universe of that eon is pure energy, the light of creation has already arrived at each point of that universe, start to finish – including the instant at the far end of the eon when the next Big Bang bangs.
On and on through all the eons instantaneously, right? From the viewpoint of light, the eons are in superposition – all are happening at once.
For us, it’s worth deep reflection. The light shines in all our atoms, holding us together, illuminating our dreams, reverbing around us in the hum of things, seething with patience, having seen it all, and so very glad for our forgetting.