Tag Archive for earthly mysteries

Discover Magazine Video: Joe Genius / Episode 13: Gravity

Gravity is part of the equation used in every explanation of the make-up of our earth be it solid or hollow.  I add this video into the Hollow Earth/ Subterranean Worlds Archive  to help those who are working on earthly mysteries, especially those who have just entered this area of mystery. . . . EDITOR

from Discover Magazine Video