After 25 years of laboratory research on protoplanetary dust agglomeration, a consistent
picture of the various processes that involve colliding dust aggregates has emerged …

Radar sounding is a powerful geophysical approach for characterizing the subsurface
conditions of terrestrial and planetary ice masses at local to global scales. As a result, a wide …

Nonlinear electromagnetic (EM) inverse scattering is a quantitative and super-resolution
imaging technique, in which more realistic interactions between the internal structure of …

Abstract The Rosetta spacecraft reached Comet 67P/Churyumov-Gerasimenko (hereafter
67P/CG) in August 2014 at an heliocentric distance of 3.6 au and was then put in orbit …

Cometary nuclei consist mostly of dust and water ice. Previous observations have found
nuclei to be low-density and highly porous bodies,,, but have only moderately constrained …

The Philae lander, part of the Rosetta mission to investigate comet 67P/Churyumov-
Gerasimenko, was delivered to the cometary surface in November 2014. Here we report the …

ABSTRACT Our modern day Solar System has 4.6× 109 yr of evolution behind it with just a
few relics of its birth conditions remaining. Comets are thought to be some of the most …

The processes that led to the formation of the planetary bodies in the Solar system are still
not fully understood. Using the results obtained with the comprehensive suite of instruments …

Context. We investigate the formation and evolution of comet nuclei and other trans-
Neptunian objects (TNOs) in the solar nebula and primordial disk prior to the giant planet …

Comets have three known reservoirs: the roughly spherical Oort Cloud (for long-period
comets), the flattened Kuiper Belt (for ecliptic comets), and, surprisingly, the asteroid belt (for …