A. Ian F. Stewart

TL;DR: The Cassini Ultraviolet Imaging Spectrograph (UVIS) as discussed by the authors is part of the remote sensing payload of the Cassini orbiter spacecraft and has two spectrographic channels that provide images and spectra covering the ranges from 56 to 118 nm and 110 to 190 nm.

TL;DR: Ozone is observed to be present in the polar regions of Mars and to have a seasonal variation, and is found in association with the formation of the polar hood.

TL;DR: The Cassini Ultraviolet Imaging Spectrometer (UVIS) observed the extinction of photons from two stars by the atmosphere of Titan during the Titan flyby to determine the asymptotic kinetic temperature at the top of the atmosphere.

TL;DR: Neutral oxygen in the saturnian system shows variability, and the total number of oxygen atoms peaks at 4 × 1034, which is consistent with initially pure water ice bombarded by meteors.

TL;DR: The Pioneer Venus Orbiter ultraviolet spectrometer has seen variable disk brightness features similar to the well-known "UV markings" seen at longer wavelengths as discussed by the authors, which are consistent with a homogeneous cloud of H2SO4 aerosols.