From what i understand about light years, it is the distance a beam of light travels in 1 earth year. Now for my question. If we could INSTANTLY teleport to a distance 100 million light years away from earth, could we look back at earth and see what was going on 100 million years ago (asssuming we had the proper telescope)?

I assume this is possible, because i have always heard that some of the stars we see at night may already be extinct, just that the last light rays havent reached earth yet.

but this will probably never be a reachable goal. Instant teleporting?......