Caption An animation showing the Cygnus X-1 system, consisting of a black hole in orbit with a giant star. Recent observations by radio telescopes have found the system is 20 per cent further away ...

What Was the First Black Hole Ever Discovered? The first accepted black hole was Cygnus X-1. Discovered during a 1971 rocket flight, Cygnus X-1 is one of the strongest X-ray sources detectable ...

The breakthrough offers new insights into the feeding mechanisms of black holes, from stellar-mass systems like Cygnus X-1 to supermassive giants at the centers of distant galaxies. If you’ve ...

If a star orbits a black hole, it will appear from a distance to be orbiting empty space. Gaia projects the star’s orbit on a plane in the sky while ground-based telescopes meanwhile track how light ...

A black hole is a region in space where gravity is so strong that nothing, not even light, can escape, formed from collapsed massive stars. Black holes form when massive stars collapse under their ...

Working off of Albert Einstein’s theory of gravity, the Australian physicist Ludwig Flamm suggested that a spacetime conduit could connect one side of a hole to the other. While black holes suck ...