Question

Gravitational constant, $G$, What if it is not Constant?

Answer 1

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✔️✔️The first given answer provides thoughts how the gravity could be influenced locally. I don't see this possible and I want to lead the thoughts to correct direction, So I feel it necessary to open my thoughts more.

The source is this Feynman Lection. I calculated and found out, that the energy of these particles hitting the "mass only" is not enough to cause Gravity.

But if we think the Solar system, it's 110- 122 AU up to the Edge of Heliosphere. (Maybe it's 137.036) Anyhow, the Voyager has detected a 100-fold increase in the intensity of high-energy electrons from elsewhere in the galaxy diffusing into our solar system from outside, this means that these electrons are colliding the few atoms at 120 AU away from the sun; and thus these atoms will have a velocity.

And as they will hit more an more atoms, the pressure grows as it grows in atmosphere and in sea. If there is a mass consentration, like planet, it will get more hits, and it will have shade on the Sun's side. And this fit's exactly on the Newton's gravity laws.

Shortly, the Gravity is like pressure, but you need enough connected atoms to make a difference between the random directions and the systematical direction of these collisions.

This would mean that all particle size are influenced; like answered here by AnnaV; What is the smallest item for which gravity has been recorded or observed? But it would also explain how very small particles can flow in the air quite some time.




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Answer 2

The stuff I am thinking here has nothing to do in our Solar system, as it seems that G is here as constant as the g is on Earth. And exactly as g varies between planets, it might be possible that G varies between Solar systems.