Cometary Science Newsletter Issue 55 October 2019 https://www.cometarysciencenews.org/ - Conference Announcements + Astrochemical Complexity in Planetary Systems - Comet Notes + Microphysics of Dust in the Interstellar Comet C/2019 Q4 (Borisov) - Refereed Journal Articles + Disintegrating In-Bound Long-Period Comet C/2019 J2, Jewitt and Luu + Cometary compositions compared with protoplanetary disk midplane chemical evolution. An emerging chemical evolution taxonomy for comets., Eistrup et al. Read this issue online: https://www.cometarysciencenews.org/issues/issue-0055.html Submit your items for the next CSN: https://www.cometarysciencenews.org/submit/ Subscribe/unsubscribe to email notifications: https://www.cometarysciencenews.org/subscribe/ -- The Cometary Science Newsletter is dedicated to sharing and furthering cometary science. CSN invites contributions from the astronomical and planetary science communities, including abstracts of papers accepted for publication in refereed journals, thesis abstracts, timely notes on particular comets, conference announcements, job announcements, or other relevant and brief scientific communications. Relevant topics include observational, theoretical, and laboratory work concerning comets, but also may include studies of associated phenomena, such as Centaurs, asteroid-comet transition objects, debris disks, and protoplanetary disks. You received this email because you are subscribed to the Cometary Science Newsletter (COMETARY-SCIENCE-NEWS) mailing list. If you would like to unsubscribe from this list, simply send an email to [log in to unmask] with the message signoff COMETARY-SCIENCE-NEWS in the body.