Subaru Telescope's near-infrared image of the protoplanetary disk around the young star J 1604. A black circular mask covers the bright, saturated light from the central star. The gauges for distance are in astronomical units and arcseconds. Prominent features include the hole (white dotted line) in the disk; the arm extending over the hole (on the right); and the asymmetric dip (on the left). // Graduate Univ. for Advanced Studies and the National Astronomical Observatory of Japan