Kappa Mechanism | Estateplanning | Vibepedia.Network

The kappa mechanism, or κ-mechanism, is a fundamental astrophysical process where variations in stellar opacity trigger rhythmic pulsations in variable stars. By acting like a thermal valve in partial ionization zones, it traps and releases energy, causing stars to expand and contract periodically. This phenomenon powers the variability of iconic stars like Cepheids, anchoring their role as cosmic distance markers.