Composite image showing three view (from bottom) of the central region of the Messier 87 (M87) galaxy in polarised light and one view (top) in the visible wavelength. M87 is an elliptical galaxy in the constellation Virgo, 50 million light years away from Earth. It has a supermassive black hole at its core which gathers infalling material and produces powerful jets that launch energetic particles outwards. The top image was taken using the Hubble Space Telescope and shows a part of M87's jet. The Atacama Large Millimeter/submillimeter Array's (ALMA) polarized image (second from top) shows part of the jet closer to the centre of the galaxy. The Very Long Baseline Array (VLBA) polarized image (centre) shows M87's supermassive black hole. The bottom image is also a polarized light image of M87's black hole. This image was obtained by the Event Horizon telescope (EHT), a global array of eight ground-based radio telescopes that was designed to capture images of a black hole.