From Halopedia, the Halo wiki

There is more information available on this subject at Plutonium on the English Wikipedia.

Plutonium is a radioactive transuranic element. It is used in nuclear weapons. When stored aboard interstellar spacecraft, the plutonium in nuclear weapons generates a Cherenkov radiation aura upon exiting Slipspace that negates stealth measures,[1] forcing stealth vessels to jettison any nukes aboard if a stealthed slipspace exit is necessary.[2]

List of appearances[edit]


  1. ^ Halo: Ghosts of Onyx, page 15
  2. ^ Halo: Ghosts of Onyx, page 187