What I discovered about the atom is that electrons in the atom are actually orbiting the nucleus in different energy levels or shells.
I also discovered the first subatomic particle using cathode rays called an "Electron". Electrons have no mass and are 100x smaller than atoms.
Hello! I'm Ernest Rutherford and I used radioactive rays to probe atoms. Then I discovered that an atom has a thing in the center of it called "Nucleus" which are surrounded by a large empty space, and are circled by tiny electrons.