GRS 1124-683
= GRS 1124-683
{wiki=GRS_1124-683}
GRS 1124-683 is an astronomical X-ray binary system located in the constellation Musca. It consists of a massive blue companion star and a black hole or neutron star. The system is notable for being one of the brightest X-ray sources in the sky and has been studied extensively to understand the processes of mass transfer and the behavior of matter in extreme gravitational fields.