Cosmic Clocks Reveal Hidden Ripples in Spacetime

A new paper presents a method for distinguishing between different sources of nanohertz gravitational waves. Pulsars may be revealing faint ripples in the fabric of the universe, ultra–low-frequency gravitational waves moving through space itself. Signals detected by international pulsar timing array collaborations in 2023 could point to one of two possibilities: a stochastic gravitational-wave background […]

Source link