A deuterium molecule with a proton at the nucleus. A proton is a type of primary subatomic particle in normal matter that made up half of an atomic nucleus. The proton's antiparticle is the positron. This article is a stub relating to science. You can help our database by expanding on it. AppendicesEdit ReferencesEdit DS9 episode: "If Wishes Were Horses" SA novel: Starfleet Academy ... External linksEdit Proton article at Memory Alpha, the wiki for canon Star Trek. Proton article at Wikipedia, the free encyclopedia. Retrieved from "https://memory-beta.fandom.com/wiki/Proton?oldid=590340" Categories: Memory Beta stubs (science) Particles Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.