A tiny detector could unveil gravitational waves we’ve never seen before

Scientists have developed a compact, table-sized detector that can sense gravitational waves in the previously unexplored milli-Hertz frequency range using advanced optical cavity and atomic clock technologies. This breakthrough fills a crucial gap between existing high-frequency detectors like LIGO and ultra-low frequency pulsar timing arrays, opening access to new cosmic phenomena including white dwarf binaries and black hole mergers. The detector offers a cost-effective way to explore this frequency band while space missions like LISA remain over a decade away.