To find quarks, physicists smashed a proton and antiproton together. This caused them to break into bits and fly off in different directions. The particles left trails, which were analyzed by computer. All the quarks also have different masses. Up and Down are the lightest, while Top is by far the most massive.
Antimatter does exist, and has been produced in laboratories.
Anti-particles have opposite properties from their corresponding particle. When a particle and its antimatter particle collide, they both disappear, leaving behind a burst of energy. All Rights Reserved.