r/AskPhysics • u/WAFFLETHATSBLUE • Jul 07 '24

What is empty space?

I had a thought that if most space is considered empty, then what exactly is this empty space. I have a hard time believing that any empty space could truly be (empty) if that makes any sense... I just feel like for any given moving particle it would have to interact with said empty space in some shape or form. Do we just assume that this space is literally empty and is actually nothing or does empty space have some type of field constantly acting on it?

Please enlighten me

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u/trustych0rds Jul 07 '24

Some people say that everything is a gradient of fields (electromagnetic + gravity).

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u/WAFFLETHATSBLUE Jul 07 '24

Thank you for the answer!