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Newtonian physics also has gravity decreasing with height, no need to get out the big guns.
“Mom! Canada’s picking on me again…”
say what now?
citation needed.
Newton's law of gravitation. F = G m1*m2/r^2
Ah, I see. I thought we were talking about the constant.
G is also fixed in GR, although it's not guaranteed to manifest in a neat relation like that in every situation because spacetime curvature has a lot of components at every point, and they interact super nonlinearly.
F=Gm~1~m~2~/r^2^
G is the gravitational constant, the m's are the masses in question, and F is the force generated. The r is radius from the center of one body to the other; that is, height. If it didn't decrease, orbits wouldn't exist the same way and astronomers would have laughed Newton out of the room.
I could give you a link if you really want, but it's the Newtonian gravity equation, so it's probably just going to be "Gravity" on Wikipedia.