In addition to the artifacts and clear descriptions contained in the Vedic epic texts, we also have some of the oddities encountered in space to consider. Is it possible that these are remnants from when man previously had space travel capability?
For example, we discovered an unknown satellite in orbit in the beginnings of our modern space exploration. Astronauts have seen what appear to be artificial structures on the moon. Laymen have noticed oddities on the surface of Mars, and scientists have figured out that Phobos (Mar's moon) seems to be inexplicably hollow- and three probes going to Phobos have disappeared. Read more below: