I was watching a Vsauce video and learned that any two objects, like two baseballs, are attracted to each other because of their mass, and the bigger the mass, the more gravity an object has. What does mass have to do with gravity, and what causes gravity? Why does something just attract other things around it?
In: Physics
Nobody knows. Mass is right now a measurable property of matter, and we understand its effects on itself as well as space/time, but nobody knows why matter has mass, or why it has the properties it does.
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