Maybe Earth? Who knows? Lots of good sci-fi has been written about it. I recommend J.P. Hogan’s “Inherit the Stars”, which starts with evidence of human spacefl

Maybe Earth? Who knows? Lots of good sci-fi has been written about it. I recommend J.P. Hogan’s “Inherit the Stars”, which starts with evidence of human spaceflight predating known history and goes on interesting directions.