Here’s a quote from physicist Paul Davies on the notion that we might live in a “block universe”:
“Physicists prefer to think of time as laid out in its entirety – a timescape, analogous to a landscape – with all past and future events located there together … Completely absent from this description of nature is anything that singles out a privileged special moment as the present or any process that would systematically turn future events into the present, then past, events. In short, the time of the physicist does not pass or flow.”
In other words, the block universe is all there and static (past, present, and future). It’s a big, fricken mind-boggling 747 if there ever was one.
Another way I’ve heard the block universe laid out is as a time-space landscape where every discreet quantum moment is both “somewhere” and “somewhen.” These other past and future moments are as present and existent as this very moment, but are not experienced by our individual consciousnesses because we inhabit this particular and very different somewhere/somewhen place in the grid.
In short, all of the universe’s “time moments” are as present as Sydney and Los Angeles are present. We just might not be in a position in space/time to see and experience them.