What produces gravity?
The most likely cause of gravity was predicted long ago by Le Sage (http://redshift.vif.com/BookBlurbs/PushingGravity.htm#Preface), who theorized that it was a push, not a pull. Bodies tend to be pushed toward each other through mutual shielding from high-velocity particles that collide with atomic nuclei. The “pull” of gravity that we observe is akin to the “suction” produced by a vacuum cleaner–both are really pushes and mathematics is no help in distinguishing between them. Each thing in the universe requires its “pushers” to keep it together. This is why the universe must be microcosmically as well as macrocosmically infinite. Presumably, even the pushers require pushers, and nothing could survive in a universe devoid of them. Of course, Le Sage’s theory, or some variant of it, will not be accepted until the current finite universe theory is discarded.
