Rutherford was the one that claimed that electrons orbit around atoms. He was the one that ALMOST completed the atom model(as neutrons had yet to be found). With his gold foil experiment(see video below) he found the proton and concluded that like a solar system, the nucleus must be the ‘Sun’ and the electrons the ‘Planets’. He could say this because (this is from a website):- “Rutherford reasoned that they must get scattered by tiny bits of positively charged matter. Most of the space around these positive centers had nothing in them. He thought that the electrons must exist somewhere within this empty space. Rutherford thought that the negative electrons orbited a positive center in a manner like the solar system where the planets orbit the sun.”