Black hole crackling and flaring violently

Artist's impression of the black hole system MAXI J1820 070, based upon observed characteristics during a rapid accretion episode in March 2018. Purple denotes X-ray radiation seen by the NICER instrument on the ISS, and the rest of the colours show visible light seen by HiPERCAM in La Palma. The video is shown at roughly 1/10th of the true speed. The black hole is seen to feed off the companion star, drawing the material out into a vast disc of inspiralling matter. As it falls closer to the black hole its