Here we describe the novel, multi-point Comet Interceptor mission. It is dedicated to the
exploration of a little-processed long-period comet, possibly entering the inner Solar System …

The environment of a comet is a fascinating and unique laboratory to study plasma
processes and the formation of structures such as shocks and discontinuities from electron …

In-situ study of comet 1P/Halley during its 1986 apparition revealed a surprising abundance
of organic coma species. It remained unclear, whether or not these species originated from …

We propose to identify the main sources of ionization of the plasma in the coma of comet
67P/Churyumov-Gerasimenko at different locations in the coma and to quantify their relative …

Rosetta has followed comet 67P from low activity at more than 3.6 au heliocentric distance to
high activity at perihelion (1.24 au) and then out again. We provide a general overview of the …

Context. The Rosetta spacecraft provided us with a unique opportunity to study comet
67P/Churyumov–Gerasimenko (67P) from a close perspective and over a 2-yr time period …

Spacecraft charging is problematic for low‐energy plasma measurements. The charged
particles are attracted to or repelled from the charged spacecraft, affecting both the energy …

We use observations from the Ion and Electron Sensor (IES) on board the Rosetta
spacecraft to study the relationship between the cometary suprathermal electrons and the …

Context. The Rosetta spacecraft escorted Comet 67P/Churyumov-Gerasimenko for 2 yr
along its journey through the Solar System between 3.8 and 1.24 au. Thanks to the high …

Abundant molecular oxygen was discovered in the coma of comet 67P/Churyumov–
Gerasimenko. Its origin was ascribed to primordial gaseous O2 incorporated into the …