This is all hypothetical because it would involve technology beyond human ability as of now or the near future, so it's more about the physics of it.
If I were to rapidly travel an amount of light years away from earth (by faster than light travel, teleportation/wormhole, etc. the method isn't really relevant to the question as long as its faster than the travel of photons from earth), and I had a way of perfectly viewing earth somehow, would I see into what would be our past? At 4500 light years from earth could I see the construction of the great pyramids? Or dinosaurs at 70 million light years?