Questions regarding how primordial or pristine the comets of the solar system are have been
an ongoing controversy. In this review, we describe comets' physical evolution from dust and …

Dust particle sizes constrained from dust continuum and polarization observations by radio
interferometry are inconsistent by at least an order of magnitude. Motivated by porous dust …

Context. Outgassing of dust-ice aggregates plays an important role on the surfaces of
cometary nuclei as well as for snow-line crossings in protoplanetary disks. Aims. To assess …

The mechanism of dust emission from a cometary nucleus is still an open question and
thermophysical models have problems reproducing outgassing and dust productions rates …

Granular solids in planetary science are found in the regolith that covers planetary surfaces
as well as in the bulk of rubble-pile asteroids, comets and planetesimals. To help …

We extend an existing thermophysical activity model of comet 67P/Churyumov–
Gerasimenko to include pressure build-up inside the pebbles making up the nucleus. We …

The quality of cometary surface activity simulations and erosion models of icy moons
depends on a good knowledge of the surface layer permeability to gas flow. Therefore, we …

The microphysical structure of the lunar regolith provides information on the geologic history
of the Moon. We used remote sensing measurements of thermal emission and a …

Context. The collisional evolution of debris disks is expected to cause the characteristic
wavy pattern, that is, an under-or overabundance of particles of specific sizes, of grain size …

The Next Generation Very Large Array (ngVLA) is a planned radio interferometer providing
unprecedented sensitivity at wavelengths between 21 cm and 3 mm. Its 263 antenna …