Talk:Boomeranging

This goes against current understanding of gravity...General relativity would say that as the object approached the center of the earth, its velocity would begin to decellerate, and upon reaching the center, it would remain stationary...The center of the earth would have no gravity, as the mass around it should, generally, be within...well, its center of gravity, the forces in all directions would cancel each other out.

How does this thought experiment relate to worm hole?