Muon
From Tardis Wiki, the free Doctor Who reference
Muons lasted the merest billionth of a second. The Trions created muons on Regal as the fundamental working blocks of the system given that they produced the cheapest energy in N-Space. They were part of the collapse of the universe itself.
Vislor Turlough created the ARTEMIS drive using energetic muons, allowing him to create a rudimentary space-time vessel using a Style 976 Interstellar Hawk. (PROSE: Turlough and the Earthlink Dilemma)
