PHYSICAL UNIVERSE
  1. the universe of matter, energy, space and time. It would be the universe of the planets, their rocks, rivers, and oceans, the universe of stars and galaxies, the universe of burning suns and time. In this universe we would not include theta as an integral portion, although theta obviously impinges upon it as life. (SOS, p. 4)
  2. the physical universe is reducible to motion of energy operating in space through time. (Scn 0-8, p. 71)