Pretty much everything in the universe is made out of matter the Earth, you and me stars Interstellar dust all matter by which we mean that these things are made out of electrons and quarks and very occasionally other rarer matter particles, like muons towns and neutrinos. All of these particles are at their fundamental level excitations in everywhere permeating Quantum Fields, but as the famous quote goes for every particle, There is an equal and opposite antiparticle . In the everywhere permeating Quantum field that has all of the exact same properties as that particle except opposite charge and since these anti particles are opposite excitations of the quantum field when a particle and antiparticle meet they annihilate and destroy each other which is pretty much exactly like how the equation x squares equals 4 has two solutions 2 and minus 2 with the same value but opposite sign and when they meet they annihilate. Every fundamental particle has an antiparticle. There are anti quarks antineutrino. Has anti muons and a towns and of course antielectrons though, we call them positrons since antimatter particles are essentially identical to regular matter other than the opposite charge thing. They can combine together in essentially identical ways to form antiprotons anti-atoms anti molecules and in principle anything from anti ants to antimatter horns. We can also make their really cool positronium.
It’s like hydrogen except instead of an electron orbiting a proton. It’s an electron orbiting a positron until they annihilate each other in under a nanosecond because every particle of antimatter annihilates with regular matter upon meeting. It’s really hard to make anything big out of antimatter at this point. We’re still only able to make and contain a few hundred antihydrogen atoms at one time and when a particle and antiparticle annihilate, the energy has to go somewhere which is why matter-antimatter Annihilation is have been proposed as But naturally occurring antimatter is hard to come by. So unlike a uranium fission bomb which allows us to release the bottled energy of the supernovas that forged the uranium in the first place. You’d have to put all the energy into an antimatter bomb yourself by making antimatter, which you do by agitating empty space into pairs of matter and antimatter excitations kind of like hitting zero with a hammer to get out 2 and minus 2, except instead of a hammer you use a particle accelerator or high energy photons of light photons. Incidentally have zero charge and so are their own antiparticles in the same way that zero is equal to negative zero. In fact, mathematics has always been closely tied to antimatter the mathematics of relativistic quantum mechanics predicted the existence of antimatter for years before any had ever been discovered the fact that there’s so little antimatter around in the universe to discover is both an obvious thing because if it were around it would have destroyed us a good thing because it can’t destroy us and a puzzling thing if matter and antimatter are basically identical mirror
Images of one another why did the Big Bang produced so much more matter than antimatter? No one knows but to physicists the answer matters..