Cosmic Queries: Gravity
StarTalk Radio
00:00
The Four Fundamental Forces
The four fundamental forces sounds like a rap group from the 70s. No one ever knows. The next most familiar force to us humans is the electromagnetic force. That's what makes magnets repel and stick. Another force is the weak nuclear force. And another force is the force within the nucleus of the atom that holds particles together like protons hold them together.
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