2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/220229More than four decades after the discovery of pulsars, the composition of matter at their cores is still a mystery. This white paper summarizes how recent high-precision measurements of millisecond pulsar masses have introduced new experimental constraints on the properties of super-dense matter, and how continued timing of intriguing new objects, coupled with radio telescope surveys to discover more pulsars, might introduce significantly more stringent constraints.& pages + cover page, 3 figuresHigh Energy Astrophysical Phenomenatext