Hubble directly observes a black hole accretion disk | TG Daily

A new technique to study the bright disc of matter surrounding a distant black hole is as precise as spotting individual grains of sand on the surface of the moon.  Using the NASA/ESA Hubble Space Telescope, combined with the gravitational lensing effect of stars in a distant galaxy, an international team of astronomers measured the disc's size and studied the colors - and hence the temperatures - of different parts of the disc. Hubble directly observes a black hole accretion disk | TG Daily