Russell
"Radiating matter seeks a radiating condition in the outward direction of radiation. Gravitating matter seeks the inward radial direction of condensation to find its like condition." [A New Concept of the Universe, page 18]

See Also

---

centripetal
centralization
gravism
gravity
inward
Inward Explosion
inward radial direction of condensation
inward-falling
inwardly contract
outside-inwardly
syntropy
aggregation
assimilation