A
hypothesis that there exists a form of matter (hypermatter) that interacts with ordinary matter through higher dimensions or exotic forces. Hypermatter could be stable at immense densities, enable FTL propulsion, or
constitute dark matter. It appears in speculative physics as a solution to the missing mass problem or as fuel for advanced spacecraft. Unlike antimatter, hypermatter would not
annihilate with regular matter but would pass through it, making detection difficult.