English: Composite image showing how the M87 system looked, across the entire electromagnetic spectrum, during the Event Horizon Telescope’s April 2017 campaign to take the iconic first image of a black hole. Requiring 19 different facilities on the Earth and in space, image reveals the enormous scales spanned by the black hole and it forward-pointing jet, launched just outside the event horizon and spanning the entire galaxy. The upper left of the figure is an image taken by ALMA, showing the larger-scale jet observed on the same scale as the visible image taken by the Hubble Space Telescope and the X-ray image by Chandra (upper right).