The Eroding Disk of AU Mic By Susanna Kohler on 2 March 2020 Share: Twitter Facebook LinkedIn Google+ Reddit Email C. A. Grady et al 2020 ApJL 889 L21 Hubble imaging of the debris disk of M dwarf AU Mic tracks outward motion of features in the southeast arm, indicating that the debris disk is losing mass at ~10% of the stellar wind mass loss rate.