" the space station show that even small particles of matter will group together when in total weightlessness. Supporting the fact that it is possible to have gravity on the inside and outside of a hollow planet, holding people to the land mass that is between the inside and outside. Seismic testing has been done confirming this hollow earth theory is possible. Oceanographic Geology, when studied closely, shows the earth is expanding in size, and has been doing so for a long time. Why don't we know this theory? The answer should be obvious. "They" don't want us to know. Whomever controls this society doesn't want us to be aware of certain facts that show us updated versions of the world around us. They don't want people to discover we may not be the only civilization here, and that it may be possible "
― John Leonard , UFOs The Shocking Truth: The Antarctica Hollow Earth Connection