Lets see, scientists have spent lifetimes studying Physics, Astrophysics, Planetology, Astronomy, matter distribution in the universe, cataloging star types by the millions and those calculations have been out there since the 1930s and refined ever decade since
You base you observation on
study of the flat earth theory and the fact sand makes a good hat? Mmmky
Oh puh_leeez. If there were a hundred million in this gallexy and half of them were more advanced than us, we would have found some hint by now. Maybe there is something more unique about our little planet than what the experts assume.