Context. The 98° obliquity of Uranus is commonly attributed to giant impacts that occurred at
the end of the planetary formation. This picture, however, is not devoid of weaknesses. Aims …

The tilt of a planet's spin axis off its orbital axis (" obliquity") is a basic physical characteristic
that plays a central role in determining the planet's global circulation and energy …

Giant collisions can account for Uranus's and Neptune's large obliquities, yet generating two
planets with widely different tilts and strikingly similar spin rates is a low-probability event …

The goal of this chapter is to review hypotheses for the origin of the Pluto system in light of
observational constraints that have been considerably refined over the 85-year interval …

Aims. We aim to determine whether Jupiter's obliquity is bound to remain exceptionally small
in the Solar System, or if it could grow in the future and reach values comparable to those of …

Context. Giant planets are expected to form with near-zero obliquities. It has recently been
shown that the fast migration of Titan could be responsible for the current 26.7°-tilt of …

In this paper, we investigate whether Uranus's 98 obliquity was a by-product of a secular
spin–orbit resonance assuming that the planet originated closer to the Sun. In this position …

The purpose of this work is to determine the location and stability of the Cassini states of a
celestial body with an inviscid fluid core surrounded by a perfectly rigid mantle. Both …

Observational constraints on planetary spin axis have recently become possible, and they
have revealed a system that favors large spin-axis misalignment, low stellar spin–orbit …

Uranus's startlingly large obliquity of 98 has yet to admit a satisfactory explanation. The most
widely accepted hypothesis involving a giant impactor that tipped Uranus onto its side …