The Heart of this Elliptical Galaxy Exposes a Ghost From Its Past

Unlike spiral galaxies, with their flat shape and twisted arms, elliptical galaxies are featureless blobs without much structure. But then there’s NGC 3610—an elliptical galaxy with a bright and distinctly disc-like shape at its center. Astronomers say it’s a blast from this galaxy’s past, one that played an important… »11/16/15 5:40pm11/16/15 5:40pm