  Keck adaptive optics imaging with a physical resolution of 0.4 AU resolves
the inner (15-80 AU) disk of AU Mic (GJ 803), the nearest known scattered light
disk to Earth. The inner disk is asymmetric and possesses a sharp change in
structure at 35 AU. The disk also shows spatially localized enhancements and
deficits at 25-40 AU separations. The overall morphology points to the
influence of unseen larger bodies and resembles structures expected from recent
planet formation. AU Mic is coeval with the archetypical debris disk system
beta Pic, and the similarities between their two disks point to synchronous
disk evolution. Multiple indications of substructure appear to be common in
circumstellar disks at an age of ~12 Myr.
