Gravitational waves are ripples in the fabric of spacetime They are caused by some of the most violent and energetic processes They are a prediction of Einstein's General Theory of Relativity The ...
Credit: Rachel Steinhorst, NASA/Roscosmos, and Caltech/MIT/LIGO Lab Measurements from NICER, LIGO/Virgo, and ground-based radio telescopes provide insight into the pressures and densities at the cores ...