Artwork of the M87 black hole seen from a nearby planet. M87's central black hole was famously imaged in 2019 by a team of astronomers using the Event Horizon Telescope. It is the first ever image of a black hole's accretion disc that has been directly captured. This image shows the accretion engine seen from a nearby planet. Although the accretion disc is exceedingly hot, it is nearly invisible in the optical part of the spectrum because most of its luminosity is in the X-ray region of the spectrum. The jets of charged particles, however, moving at a sizeable fraction of the speed of light, are clearly visible. Also visible is the ring of stars around the edges of the accretion disc (red), which have been gravitationally lensed.