A rare cosmic alignment has revealed three supermassive black holes blasting radio jets at the same time inside a tangled ...
The Cygnus X-1 system is one of the brightest sources of X-rays in the Milky Way, consisting of a black hole called Cygnus X-1 and its giant companion, a star packing 41 times the mass of our Sun.
I was pretty excited when LIGO, the giant double-eared gravitational wave observatory in the US, detected the first gravitational waves. When Virgo came online, triangulating gravitational wave ...