KnowraPlanck epochLinked fromLinked fromThe 9 pages that link to Planck epoch, each with the reason it gives.All 9Broader topic 3Related 5Narrower topic 1Max PlanckRelated: Its name invokes Planck’s constant, which sets the scale where quantum gravity becomes relevant.Quark epochRelated: It precedes the eras in which the quark plasma is described by established particle physics.Lepton epochRelated: It lies far earlier than the particle-physics eras that include lepton dominance.Grand unification epochRelated: It precedes grand unification and marks the higher-energy boundary of established cosmological descriptions.Hadron eraRelated: It marks a much earlier regime than the particle-physics epochs that include hadron formation.