Tag - Supermassive

Is the Brightest Entity in the Cosmos a Supermassive Black Hole?

An artist's impression of the brightest object ever discovered – a quasar that shines with the light of 500 trillion Suns – which is also the fastest growing black hole, eating the equivalent of a Sun a dayESO/M. KornmesserOne might expect that locating the brightest object in the observable universe would be straightforward, but...