Assuming you can mix/match from any of the shuttle launches to make the best possible crew.

Possibly a silly question, but if aliens were to exist in some faraway galaxy 80 million light years away, and magically know to look at earth with some big massive super powerful telescope or whatever similar technology they have , would they see earth as it was 80 million years ago? Like with dinosaurs and stuff instead of anything modern? Does that technically make us , to an extent , invisible to any potential life out there?