Do you think that humans had left the earth and settled in other planets ?

Question

I mean an advanced civilization before the one we know.

If this was the case were are their remains ? Houses - temples - rockets launch pads - Cd collection ?

Answer 1

Why do you assume that Earth is "home base" for humans? Why couldn't humans have developed in another place at another time independent of Earth?

Answer 2

This is an interesting question that has been asked in several science fiction series. Star Trek: Voyager had an interesting episode "Origins Theory" which posited that a species of advanced dinosaurs left Earth millions of years ago and colonized the galaxy. Humans were woefully primitive by comparison, unfortunately.

The Star Gate movie and series (and its spin-off) is based on this very idea. Humans, captured as slaves by a super-advanced evil alien race thousands of years ago, were transported all over the galaxy using the technology of a race called the Ancients, super-advanced humans who evolved prior to the current humans, and colonized the galaxies. (Yes, that's a plural!)

Although an entertaining question to ponder, I really doubt that this has happened. Humans as a species have only recently become capable of primitive near-space travel. If humans existed before there would be some proof, some sort of artifacts.

Answer 3

there is only one earth and one civilization advancement
we are still like a turtle in the space race
some suggest we needs hibernation system in order to go
to Mars and back