Technology has advanced to the point that it is possible to image the entire sky every night
and process the data in real time. The sky is hardly static: many interesting phenomena …

We review the evidence for buried ice in the asteroid belt; specifically the questions around
the so-called Main Belt Comets (MBCs). We summarise the evidence for water throughout …

ABSTRACT As of 2012 January 21, the Pan-STARRS 1 3π Survey has observed the 3/4 of
the sky visible from Hawaii with a minimum of 2 and mean of 7.6 observations in five filters, g …

In this review presented at the Royal Society meeting,'Cometary science after Rosetta', I
present an overview of studies of small solar system objects that exhibit properties of both …

The practical distinctions between asteroids and comets, viewed as products of accretion on
either side of the snow line, are less clear-cut than previously understood. In this chapter, we …

This work focuses on the study of the aqueous alteration process which acted in the main
belt and produced hydrated minerals on the altered asteroids. Hydrated minerals have been …

Some asteroids eject dust, producing transient, comet-like comae and tails; these are the
active asteroids. The causes of activity in this newly identified population are many and …

Active asteroids behave dynamically like asteroids but display comet-like comae. These
objects are poorly understood, with only about 30 identified to date. We have conducted one …

We report on the results of a systematic search for associated asteroid families for all active
asteroids known to date. We find that 10 out of 12 main-belt comets (MBCs) and five out of …

We analyze a set of 760 475 observations of 333 026 unique main-belt objects obtained by
the Pan-STARRS1 (PS1) survey telescope between 2012 May 20 and 2013 November 9, a …