Fabric of the Cosmos

I have been watching Brian Greene’s “Fabric of the Cosmos” and am fascinated by it.
He states that physics allows for the fact that the past, present and future all exist at the same time. He further states if we could find a worm hole we could go back in time and if we could access a black hole we could go forward in time. That is just fantastic to me.
He also says the Big Bang that started the universe is still expanding it at a faster rate than ever before. At some point the stars will be so far away that we humans will look out to a night sky that is totally dark when the stars get too far away.
I don’t know enough to agree or dispute his dialogue, but it is something to think about.