This review addresses our current understanding of comets that venture close to the Sun,
and are hence exposed to much more extreme conditions than comets that are typically …

Due to its abundance and unique properties, water is a major actor in the formation and
evolution of many planetary surfaces as well as a sensitive and reliable tracer of past …

So-called 'dark comets' are small, morphologically inactive near-Earth objects (NEOs) that
exhibit nongravitational accelerations inconsistent with radiative effects. These objects …

Nitrogen, carbon monoxide, and methane are key materials in the far outer Solar System
where their high volatility enables them to sublimate, potentially driving activity at very low …

We present new, ice species-specific New Horizons/Alice upper gas coma production limits
from the 2019 January 1 MU69/Arrokoth flyby of Gladstone et al. and use them to make …

In this paper we discuss in a thermodynamic, geologically empirical way the long-term
nature of the stable majority ices that could be present in Kuiper Belt object (KBO) 2014 MU …

The solid, central part of a comet—its nucleus—is subject to destructive processes,, which
cause nuclei to split at a rate of about 0.01 per year per comet. These destructive events are …

We consider the history of New Horizons target (486958) Arrokoth in the context of its
sublimative evolution. Shortly after the Sun's protoplanetary disk (PPD) cleared, the newly …

Context. There is an active debate about whether the properties of comets as observed
today are primordial or, alternatively, if they are a result of collisional evolution or other …

Although numerous white dwarf stars host dusty debris disks, the temperature distribution of
these stars differs significantly from the white dwarf population as a whole. Dusty debris …