Antimatter is known to at least the United Empire of Earth, the Xi'an Empire and the Vanduul as a explosive material which is used in warheads and a source of energy. Antimatter precursors and antimatter are produced in fabrics.
Antimatter is used by humans at least since the 28th century, apparently for ship engines. An 'antimatter rush' followed the so called Glowing Age [of fusion drives]. Aberdeen Hurston designed the first antimatter warhead for it's company somewhere between the 2850s and 2912.
- Antimatter describes a form of matter, which is composed of anti-particles. Under natural conditions, any produced anti-matter particles instantly reacts with the sourrunding particles in a process called 'annihilitation' . Despite it's name, all energy is preserved and the process creates i.e. photons.