Heigus Particles, Higgs Particles, or Hyggs Particles (ヘイグス粒子 Heigusu Ryuushi) are the primary power source for Sidonia, her Guardians, and the Gauna. Since Heigus Particles are naturally occurring throughout the universe, they are an infinite power source for Sidonia and her people due to the strong positive charge of the particles. At the same time, they are also an infinite power source for the Gauna.
It's different from Higgs Boson (ヒッグス粒子 Higgusu Ryuushi) in Japanese.
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