This is the first visualization of a black hole. Calculated in 1979, on a IBM machine programmed with punch cards. No screen or printer to visualize, so someone MANUALLY plotted all the dots with ink.
about 10 days ago —

This is the first visualization of a black hole. Calculated in 1979, on a IBM machine programmed with punch cards. No screen or printer to visualize, so someone MANUALLY plotted all the dots with ink.