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Distribution of Hydrogen in the Near Surface of Mars: Evidence for Subsurface Ice Deposits
The Gamma-Ray Spectrometer on the Mars Odyssey has identified two regions near the poles that are enriched in hydrogen, and it is suggested that the host of the hydrogen in the subsurface layer is ice, which constitutes 35 ± 15% of the layer by weight. Expand
Survey of ion plasma parameters in Saturn's magnetosphere
[1] A survey of the bulk plasma ion properties observed by the Cassini Plasma Spectrometer instrument over roughly the first 4.5 years of its mission in orbit around Saturn is presented. The momentsExpand
Global distribution of near-surface hydrogen on Mars
[1] Neutron data observed using the Neutron Spectrometer aboard 2001 Mars Odyssey provide a lower limit to the global inventory of Martian water-equivalent hydrogen. Hydrogen-rich deposits rangingExpand
Cassini plasma spectrometer thermal ion measurements in Saturn's inner magnetosphere
represented by two anisotropic Maxwellian distributed species, H + and a water group ion, W + . Saturn’s magnetospheric plasma is shown to subcorotate by 15–30% below rigid corotation within thisExpand
The enceladus and oh tori at saturn
The remarkable observation that Enceladus, a small icy satellite of Saturn, is actively venting has led to the suggestion that ejected water molecules are the source of the toroidal atmosphereExpand
Global Distribution of Neutrons from Mars: Results from Mars Odyssey
Global distributions of thermal, epithermal, and fast neutron fluxes have been mapped during late southern summer/northern winter using the Mars Odyssey Neutron Spectrometer, and portions of the low to middle latitudes indicate subsurface deposits of chemically and/ or physically bound H2O and/or OH. Expand
Thermal ion flow in Saturn's inner magnetosphere measured by the Cassini plasma spectrometer: A signature of the Enceladus torus?
For the middle and outer magnetosphere of Saturn (>5.5 R S ), Cassini plasma spectrometer ion counting data provides thermal ion moments by assuming Maxwellian phase space density distributions forExpand
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. Expand
Cassini Finds an Oxygen–Carbon Dioxide Atmosphere at Saturn’s Icy Moon Rhea
The flyby measurements of the Cassini spacecraft at Saturn’s moon Rhea reveal a tenuous oxygen (O2)–carbon dioxide (CO2) atmosphere that appears to be sustained by chemical decomposition of the surface water ice under irradiation from Saturn's magnetospheric plasma. Expand
Production, ionization and redistribution of O2 in Saturn's ring atmosphere
Abstract Molecular oxygen produced by the decomposition of icy surfaces is ubiquitous in Saturn's magnetosphere. A model is described for the toroidal O 2 atmosphere indicated by the detection of O 2Expand