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*During [[Pair-Production|pair-production]] a [[Subatomic Particle|particle]] and its '''antimatter''' counterpart appear.
*Most '''antiparticles''' are given the name of their counterpart [[Subatomic Particle|particle]] with the addition of the prefix '''anti'''. However, the '''antiparticle''' counterpart of the [[electron]] is known as the [[positron]].
*[[Antimatter]] appears to be rare in the [[universe]] compared to [[matter]] which confuses scientists as the [[Big Bang Theory]] suggests there should have produced been equal quantities of [[matter]] and [[antimatter]] produced in the early [[universe]].*[[Antimatter]] is produced in high-energy processes such as cosmic ray interactions and particle collisions.*[[Antimatter]] has potential applications in [[Medical Imaging|medical imaging]] and cancer treatment.*[[Antimatter]] propulsion is a theoretical concept for future space travel.
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[[ProtonAntiproton]]
| style="height:20px; width:100px; text-align:center;"|<math>\bar{u}\bar{u}\bar{d}</math>
| style="height:20px; width:100px; text-align:center;"|<math>Q=-1</math>
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[[NeutronAntineutron]]
| style="height:20px; width:100px; text-align:center;"|<math>\bar{u}\bar{d}\bar{d}</math>
| style="height:20px; width:100px; text-align:center;"|<math>Q=0</math>