Hydrogen Atom Scale Model

Cool. Scroll to the left one screenful at a time. The distance to the lone electron is eleven miles away.

So why do we feel so solid? It turns out that, just as physicists will tell you that gravity is the weakest force in the universe, you should recognize that it's weak compared to the electromagnetic force. Electrons repel strongly enough to make us feel things, and photons that hit electrons are sent back to make us see things.