How the First Photo of a Black Hole Was Actually Made

The first picture of a black hole was not taken with a camera, and no single telescope ever saw it. It is a reconstruction, assembled from petabytes of radio data recorded at seven observatories scattered around the globe, then flown across the planet on hard drives. Even the famous orange glow is a decision: the color was assigned by scientists to show brightness, because the radiation itself is invisible to your eyes. [Read More]