Later This site tells the story of the history of the universe. Click Earlier and Later to follow the story. Protons are heavy particles made of three quarks . A proton is 1,836 times heavier than an electron .
Protons carry a positive electric charge .
When a single proton captures an electron it makes a hydrogen atom . Therefore a proton is the same as a hydrogen nucleus . The antiproton is an antimatter particle which has the same mass as a proton but carries a negative electric charge.