P.S. to Ody -

This link of Paxton's addresses the mathematical points you've
presented. But to qualify his terminology, i hafta wince since he
still utilizes the archaic term 'ether'. But he modifies it to
"Nether" signifying it as a dynamic fluid
and terms it "Mass" (capitalized) vis-a-vis mass.

Scroll down to II.D (Inverse square law)

http://www.softcom.net/users/greebo/grav.htm

oc