GO:0014841

The multiplication or reproduction of satellite cells, resulting in the expansion of the cell population. Satellite cells are quiescent cells that are located between the basal lamina and the plasmalemma of the muscle fiber, which are the main contributors to postnatal muscle growth. In adult muscle, satellite cells become activated to divide and differentiate in response to muscle damage. [GOC:ef, GOC:mtg_muscle, PMID:16607119]