Stochastic Sirens: Listening for the Universe's Quiet Expansion

We explore how researchers are using the stochastic gravitational-wave background—the ‘hum’ from countless unresolved black-hole mergers—as a gravity-only ruler to probe cosmic expansion. No loud events required: the current silence in the gravitational-wave background places tight constraints on slow-expansion scenarios and nudges us toward the higher Hubble constant. With LIGO, Virgo, and KAGRA, a definitive detection could arrive within six years, marking a new era in gravitational cosmology.Note:  This podcast was AI-generated, and sometimes AI can make mistakes.  Please double-check any critical information.Sponsored by Embersilk LLC