  There is evidence that ejecta from nearby supernovae have rained down on
Earth in the past. Supernovae can accelerate pre-existing dust grains in the
interstellar medium to speeds of $\sim 0.01 \mathrm{\;c}$. We investigate the
survival and impact of dust grains from supernovae on the moon, finding that
supernova dust grains can form detectable tracks with widths of $\sim 0.01 -
0.07 \mathrm{\; \mu m}$ and depths of $\sim 0.1 - 0.7 \mathrm{\; mm}$ in lunar
rocks. These tracks could potentially shed light on the timings, luminosities,
and directions of nearby supernovae.
