[clauraform]

> The explanation of why gravity is only positive is a complex one, but physicists believe it's almost axiomatic

Isn't that a consequence of relativity, the speed of light being constant by definition? I'm not sure that makes any sense, though, what is the physical unit of gravity N? Jf you mean classical mechanics, than there has to be a negative counterforce by the three axioms of newtonian mechanics and it's just a question of frame of reference.

BTW: Stress on ax-iomatic, as in axis?!

[ars]

> Isn't that a consequence of relativity, the speed of light being constant by definition?

No, because if it was then there would not be negative electric charge, and there is.