Several properties of the Solar System, including the wide radial spacing of the giant
planets, can be explained if planets radially migrated by exchanging orbital energy and …

Astronomical observations reveal that protoplanetary disks around young stars commonly
have ring-and gap-like structures in their dust distributions. These features are associated …

The asteroid (16) Psyche may be the metal-rich remnant of a differentiated planetesimal, or it
may be a highly reduced, metal-rich asteroidal material that never differentiated. The NASA …

The timeline of the lunar bombardment in the first Gy of Solar System history remains
unclear. Basin-forming impacts (eg Imbrium, Orientale), occurred 3.9–3.7 Gy ago, ie 600 …

Many dynamical aspects of the solar system can be explained by the outer planets
experiencing a period of orbital instability sometimes called the Nice Model. Though often …

Comets are icy objects that orbitally evolve from the trans-Neptunian region into the inner
solar system, where they are heated by solar radiation and become active due to the …

The dynamical structure of the Solar System can be explained by a period of orbital
instability experienced by the giant planets. While a late instability was originally proposed …

Abstract The Scattered Disk Objects (SDOs) are a population of trans-Neptunian bodies with
semimajor axes 50< a≲ 1000 au and perihelion distances q≳ 30 au. The detached SDOs …

The terrestrial planets are believed to have formed by violent collisions of tens of lunar-to
Mars-size protoplanets at time t< 200 Myr after the protoplanetary gas disk dispersal (t 0) …

Recent analyses of samples from asteroid (162173) Ryugu returned by JAXA's Hayabusa2
mission suggest that Ryugu and CI chondrites formed in the same region of the …