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 …

Asteroids and comets are the remnants of the swarm of planetesimals from which the
planets ultimately formed, and they retain records of processes that operated prior to and …

Context. Water is a key molecule in the physics and chemistry of star and planet formation,
but it is difficult to observe from Earth. The Herschel Space Observatory provided …

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 …

Context. Exoplanet atmospheres are thought be built up from accretion of gas as well as
pebbles and planetesimals in the midplanes of planet-forming disks. The chemical …

Ammonium hydrosulphide has long since been postulated to exist at least in certain layers
of the giant planets. Its radiation products may be the reason for the red colour seen on …

Primitive objects like comets hold important information on the material that formed our solar
system. Several comets have been visited by spacecraft and many more have been …

ABSTRACT European Space Agency's Rosetta spacecraft at comet 67P/Churyumov–
Gerasimenko (67P) was the first mission that accompanied a comet over a substantial …

The evolutionary past of our Solar system can be pieced together by comparing analogous
low-mass protostars with remnants of our Protosolar Nebula–comets. Sulphur-bearing …

A prevailing theory for the interstellar production of complex organic molecules (COMs)
involves formation on warm dust-grain surfaces, via the diffusion and reaction of radicals …