Find me any competent scientist who doesn't believe in gravity. I'll be waiting.
"Find me any competent scientist who doesn't believe in gravity. I'll be waiting."
Gravity is a force. It exists. Everyone believes that gravity exists. That isn't even a question.
Within limits, some mathematical formulae can be used to predict gravitational effects. The ones Newton came up with work OK, but only from the frame of reference of this planet. Once you head out into the universe, gravity behaves much differently.
The question, mlcnnnn, is how does gravity work? You know, we have no real explanation for it. The theory of gravity has changed drastically since Newton. Yet, we still don't know exactly why gravity works as it does. There are hypotheses about it, and research is ongoing.
So, there's lots of disagreement about the theory of gravity. Gravity's effects, like evolution, are facts. They happen. Why and how...well, that's all still under study, and probably will be long past our lifetimes.
Bad example, mlcnnnn.
I don't "believe" in gravity. I don't have to "believe". I can measure it. However, gravitational theory can and will be revised as new data is uncovered/discovered.
This is different than a "belief" system.
Believe in what exactly? Turns out no one is really sure what gravity actually is. (For instance whether it's a force like electromagnetism or more a property of space/time as effected by matter/energy.) The equivalence between gravity and inertia -- suggested by generally relativity -- is not understood. Indeed it's not understood why there even is inertia if relativity is true, as it certainly appears to be. (How does nature "know" to create a "centripetal force" if all motion is relative?)
You say that there is a "law" of gravity, and there is. But look a little closer and you find it's not a real law because it's not universal. Real laws are supposed to apply in all relevant circumstances. But to universalize the (Newtonian) law of gravity you have to apply it in the context of a THEORY (e.g. general relativity).