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Sulfuric acid on Europa and the radiolytic sulfur cycle.
A comparison of laboratory spectra with Galileo data indicates that hydrated sulfuric acid is present and is a major component of Europa's surface, and this moon's visually dark surface material is identified as radiolytically altered sulfur polymers.
Hydrogen peroxide on the surface of Europa.
Spatially resolved infrared and ultraviolet wavelength spectra of Europa's leading, anti-jovian quadrant observed from the Galileo spacecraft show absorption features resulting from hydrogen peroxide, demonstrating that Europa's surface chemistry is dominated by radiolysis.
Photodesorption from low-temperature water ice in interstellar and circumsolar grains
The results indicate that the rate of photodesorption is appreciable and can account for the absence of icy mantles on grains in diffuse interstellar clouds, it exceeds solar-wind ion erosion and sublimation in the outer Solar System, and it is important in determining the lifetimes of icy Mantles in dense molecular clouds.
Sputtering of sodium on the planet Mercury
The discovery of a column density of neutral sodium vapour (∼1011–1012 atoms Na cm−2) associated with the solar-facing side of the planet Mercury1 has rekindled interest in the possible presence of
Flagellar hydrodynamics. A comparison between resistive-force theory and slender-body theory.
The resistive-force theory is completely satisfactory for use in analysis of mechanisms for the control of flagellar bending, at the current level of sophistication of this analysis.
Detection of ozone on Saturn's satellites Rhea and Dione
The identification of O3 in spectra of the saturnian satellites Rhea and Dione indicates the presence of trapped O3 is thus no longer unique to Ganymede, suggesting that special circumstances may not be required for its production.
Detection of Ozone on Ganymede
An absorption band at 260 nanometers on the trailing hemisphere of Ganymede, identified as the Hartley band of ozone (O3), was measured with the Hubble Space Telescope, and apparently this O2-O3 “atmosphere” is trapped in GanyMede's surface ice, an inference consistent with the shift and broadening of the band.
Composition and Dynamics of Plasma in Saturn's Magnetosphere
Over the A and B rings, an ionosphere in which O2+ and O+ are dominant is found, which suggests the possible existence of a layer of O2 gas similar to the atmospheres of Europa and Ganymede.
Mars solar wind interaction: Formation of the Martian corona and atmospheric loss to space
escaping fluxes of pickup ions are derived from a 3-D hybrid model describing the interaction of the solar wind with our computed Martian oxygen exosphere. In this work it is shown that the role of
Exospheres and Atmospheric Escape
Aeronomy is a description of the physics and chemistry of the upper atmospheres and ionospheres of planetary bodies. In this chapter we consider those processes occurring in the upper atmosphere that