Why This Stuff Costs $2700 Trillion Per Gram - Antimatter at CERN

Wtf is anti matter? Actually I remember its the matter particle broken up into bits so it is incredibly unstable. Not anti matter at all, more half or quarter of a matter particle. Edit: It wont go against gravity though, unless you observe it reacting somehow in the direction against gravity. Gravity is stuff btw its not equations gravity flows and is moved by matter, antimatter isnt going to go against it for some reason.