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When a guy like that says, (meh) "it could be" but also "it could not be" then like... Almost anything seems possible.
What we won't hear him ever say though is that the Earth is flat. That is just ridiculous.
it's leading to sloppy practices in science.
Because that would be electromagnetism.
Gravity is why you don't float off the planet. Electromagnetism is why you don't fall through the floor all the way to the middle of the earth. They both behave in different ways, so it's difficult to understand how they can be the same thing.
Actually, I've just realised that's a very bad example. But they are very different, even if I did give a bad example.
Yep, you are connected to the Universe in ways that many people don't comprehend. Maybe those spiritualist types are right!
"Presuming that Newton's laws of gravity apply to all things in the universe, let's say that there's a ball floating in the emptiness of space. If there is no other object that would gravitationally interact with the ball, will the ball keep floating to the vast emptiness to all eternity or if there is something in Newton's laws that might require some amendments to factor in the flaws that this hypothetical situation manifests?"
It's hard for the object to fall into something when there is nothing to fall into.
After all, gravity is a unique force of nature unlike electromagnetism and nuclear forces, as I recall that gravity and the rest of the forces of nature can exist independently, but at this point, I would have to be an utter academia freak with a Ph.D in theoretical physics to assert that with some degree of certainty, so I'll have to hold that thought until some egghead at any prominent university in the world can prove that.
What if Gravity doesn't exist?
Well then I wouldn't be laughing at you right now, but I am... oO
Gravity is how we explain the effect and not the cause. Gravity is not not the cause of the effect otherwise gravity could simply be existing without a planet and the idea of us living on a planet is just an alternative to be living on a floating cloud of gravity pulls. This way with help of gravity pulls space monsters would be possible living in a pocket of floating water with help of gravity pulls keeping the water in one place.
The water itself isn't spreading out to the edges of the universe since space is consisting of something. Mass want to occupy the vacuum. We may as well be surrounded by mass and the universe is a pocket inside endless mass and the universe deteriorate the mass into space and we're in the center of a burning globe of fire where the energy created causes gravity spreading in every direction toward the center
The late Stephen Hawking is indeed correct with rescinding his opinion on the possibility of mankind discovering the "Theory of Everything" within a short timeframe in the existence of known modern physics that will help explain gravity and the rest of the forces of nature in a standardized set of rules and assumptions.