Originally posted by Sorayugiman
I have always thought that this is impossible because a planet has a center of gravity so to speak and the graity it produces because of its "core" which i guess there cant be since they say its hollow anyways the gravity makes the planets round and stars. So i dont see any possible way that the earth could be hollow. Maybe caves but not hollow
if im wrong on any of my thoughts please correct me i would be more than happy for someone to explain how it works

actually.. planets liek the earth-moon system share a mutual center of gravity called the barycenter. it's actually about 10,000 miles below the earth's crust and is constantly moving around the equator in a hula-hoop pattern.

nobody has ever photographed the earth's 'core' ...
an explanation for the gravity could be a combination of CENTRIFUGAL FORCE from the spinning of our planet's rotation.. pushing the inner matter OUTWARD.. (just like happens to anything ELSE in this universe that SPINS..ahem..) .... as well as could be a hypothetical TINY miniature star in the center.. lighting the interior..