Fun fact- because of the nature of electrons, most of an atom (somewhere in the ballpark of 90%) is actually comprised of "empty". That's right- the universe that you see and understand, there's only 10% of it filled. The light you see is only a small portion of the massive spectrum, yet that massive spectrum is only 10% of the space that it "fills". You literally are almost comprised of nothing- yet you are one of the most complex chemical processes in the universe.