The distant ice giants of the Solar System, Uranus and Neptune, have only been visited by
one space mission, Voyager 2. The current knowledge on their composition remains very …

To investigate the details of hydrocarbon photochemistry on Saturn, we have developed a
one-dimensional diurnally averaged model that couples hydrocarbon and oxygen …

We present our current understanding of the composition, vertical mixing, cloud structure
and the origin of the atmospheres of Jupiter and Saturn. Available observations point to a …

Darwin (ESA) and Terrestrial Planet Finder-TPF (NASA) are two projects of space
telescopes aiming at the detection of extra-solar terrestrial planets and some of their …

Ablation of interplanetary dust supplies oxygen to the upper atmospheres of Jupiter, Saturn,
Uranus, and Neptune. Using recent dynamical model predictions for the dust influx rates to …

We use a one-dimensional diurnally averaged model of photochemistry and diffusion in
Saturn's stratosphere to investigate the influence of extraplanetary debris on atmospheric …

Abstract On 2007 December 16–17, spectra were acquired of the disk of Uranus by the
Spitzer Infrared Spectrometer (IRS), ten days after the planet's equinox, when its equator …

Measuring the spatial distribution of chemical compounds in Saturn's stratosphere is critical
to better understand the planet's photochemistry and dynamics. Here we present an analysis …

Potential energy surfaces for high-energy collisions between an oxygen molecule and a
nitrogen atom are useful for modeling chemical dynamics in shock waves. In the present …

Cryovolcanic activity near the south pole of Saturn's moon Enceladus produces plumes of H
2 O-dominated gases and ice particles, which escape and populate a torus-shaped cloud …