The fading optical afterglow of GRB 990123, as seen by HST on Days 16, 59 and 380 after the burst. On these pages we present images, spectra and scientific results from HST observations of a number of gamma-ray bursts. ... GRB 010222 HST WFPC2 images show the optical transient to be located on a compact host, and find that the decay of the transient steepened to a slope of approximately -1.7, far steeper than earlier ground-based imaging had suggested. ... Is this a 29th magnitude host galaxy? ...