The interstellar medium is characterized by a rich and diverse chemistry. Many of its
complex organic molecules are proposed to form through radical chemistry in icy grain …

In situ research of cometary chemistry began when measurements from the Giotto mission at
Comet 1P/Halley revealed the presence of complex organics in the coma. New telescopes …

The importance of comets for the origin of life on Earth has been advocated for many
decades. Amino acids are key ingredients in chemistry, leading to life as we know it. Many …

The composition of giant planets is imprinted by their migration history and the
compositional structure of their hosting disks. Studies in recent literature have investigated …

The composition of a planet's atmosphere is determined by its formation, evolution, and
present-day insolation. A planet's spectrum therefore may hold clues on its origins. We …

The detection of the amino acid glycine and its amine precursor methylamine on the comet
67P/Churyumov-Gerasimenko by the Rosetta mission provides strong evidence for a cosmic …

Comets are considered to be some of the most pristine and unprocessed Solar system
objects accessible to in situ exploration. Investigating their molecular and elemental …

Cometary ices are rich in CO2, CO and organic volatile compounds, but the carbon content
of cometary dust was only measured for the Oort Cloud comet 1P/Halley, during its flyby in …

We present an extended version of the two-phase gas–grain code nautilus to the three-
phase modelling of gas and grain chemistry of cold cores. In this model, both the mantle and …

INTRODUCTION Comets and asteroids preserve information on the earliest stages of Solar
System formation and on the composition of its building blocks. The nature of their solid …