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 …

This chapter reviews the estimates of the dust-to-gas and refractory-to-ice mass ratios
derived from Rosetta measurements in the lost materials and the nucleus of 67P/Churyumov …

The origin of Earth's water remains unknown. Enstatite chondrite (EC) meteorites have
similar isotopic composition to terrestrial rocks and thus may be representative of the …

Comets harbor the most pristine material in our solar system in the form of ice, dust, silicates,
and refractory organic material with some interstellar heritage. The evolved gas analyzer …

Images from the OSIRIS scientific imaging system onboard Rosetta show that the nucleus of
67P/Churyumov-Gerasimenko consists of two lobes connected by a short neck. The nucleus …

Context. The ESA Rosetta spacecraft (S/C) is tracking comet 67P/Churyumov-Gerasimenko
in close vicinity. This prolonged encounter enables studying the evolution of the volatile …

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 …

We examine the evolution of the water production of comet 67P/Churyumov–Gerasimenko
during the Rosetta mission (2014 June–2016 May) based on in situ and remote sensing …

The ESA Rosetta spacecraft followed comet 67P at a close distance for more than 2 yr. In
addition, it deployed the lander Philae on to the surface of the comet. The (surface) …

Several sulphur-bearing species have already been observed in different families of comets.
However, the knowledge on the minor sulphur species is still limited. The comet's sulphur …