▪ Abstract In this review we describe the discovery and development of understanding of the
so-called elliptical instability. This is the name given to the linear instability mechanism that …

Because of gravitational interactions with their companions, the rotational dynamics of
planets and stars involve periodic perturbations of their shape, the direction of their …

Inertial waves are a ubiquitous feature of rapidly rotating fluids. Although much is known
about their initial excitation, little is understood about their stability. Experiments indicate that …

Context. The presence of celestial companions means that any planet may be subject to
three kinds of harmonic mechanical forcing: tides, precession/nutation, and libration. These …

The hypothesis of an influence of the astronomical precession on the geodynamo energy
budget was recently reappraised by theoreticians. Paleomagnetic indications of such an …

Recent observations from the Galileo spacecraft suggest that Io, the innermost of Jupiter's
satellites, has a magnetic signature. Remanent magnetization appears inadequate to …

In the outer solar system, a growing number of giant planet satellites are now known to be
abodes for global oceans hidden below an outer layer of ice. These planetary oceans are a …

In this paper, we combine theoretical and experimental approaches to study the tidal
instability in planetary liquid cores and stars. We demonstrate that numerous complex …

Context. Surface magnetic fields have been detected in 5–10% of isolated massive stars,
hosting outer radiative envelopes. They are often thought to have a fossil origin, resulting …

In this article, the multipolar vortex instability of the flow in a finite cylinder is addressed. The
experimental study uses a rotating elastic deformable tube filled with water which is …