V404 Cygni is a binary system comprising a black hole and a star orbiting one another. It lies in the constellation Cygnus at a distance of about 7,800 light-years from Earth. In this type of binary, material flows from the star towards the black hole and gathers in an accretion disk, where it is heated up, shining brightly at optical, UV and X-ray wavelengths before spiraling into the black hole. Powerful jets are one of the main ways in which such...
