Serious question here.
Gravity is a force, yes? It has waves. I understand the constant force of gravity as it relates to mass for conclusive and repeatable experiments and observations in our solar system.
But to what extent can we really be sure gravity is a constant throughout the universe? Is it reasonable to theorize that gravity is different (as it relates to specific mass) in different parts (older or newer) of the universe (assuming expansion)? Is gravity considered energy? Then while it cannot be lost or gained, is it possible that it can be distributed differently across different mediums unrelated to mass?
How does light (photons) affect gravity? Gravity can affect light, so wouldn’t it be safe to assume that something as benign as light can affect gravity? Then what else can affect gravity?
Asking for a friend?
One of the assumptions are the laws of physics are the same across time and space. Although there are people working on what is called Modified Newtonian Dynamics that claim the gravitational constant itself can change.
Gravity is one of the four fundamental forces (the others being electromagnetic, strong nuclear, and weak nuclear forces). Cosmologists are reasonably sure gravity is the same throughout the universe, otherwise other parts of the universe would look very different, since gravity is the dominant shaping force of it. But we see that the universe on the largest visible scale is isotropic and homogeneous.
Gravity affects light because according to General Relativity it’s a curvature in space-time. Light follows that curvature as is propagates. So does matter, hence things fall. Gravity itself is not affected by other forces, however. Light only represents energy transferred by the electromagnetic force. The photon is its force carrier, while gravity (hypothetically) has the graviton as its force carrier.
Enough with the negative waves man!
Gravity is a force, yes?
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Gravity is actually the curvature of spacetime. Technically it’s not the same as a force, but it’s still called that, even within science.