My coworker told me gravity isn’t a force it’s an effect mass has on space time, like falling into a hole or something. We’re not physicists, I don’t understand.
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Imagine 2 ants on a sphere, parallel on the globe climbing up to the north pole. eventually they would reach the same spot, due to nothing more than the geometry of the globe. If the ants didnt know they were on a sphere they might think that there is just a mysterious force acting on them that forces them together as they climb up. But that is wrong. The analogy is the same for spacetime. We are on a funny 4 dimensional curved surface and due to the curvature in certain places, we get closer to massive objects over time.
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