With an ALCF Data Science Program award, researchers from the National Center for Supercomputing Applications and Argonne are using deep learning to develop a highly accurate method for classifying hundreds of millions of unlabeled galaxies. This image is a snapshot from a visualization that shows the output of a deep neural network during training as it is learning to classify galaxies as spiral or elliptical. (Image: Janet Knowles, Joseph A. Insley, and Silvio Rizzi, Argonne National Laboratory)