| Global distribution of near-surface hydrogen on Mars | Journal of Geophysical Research | 2004 | 361 |
| The presence and stability of ground ice in the southern hemisphere of Mars | Icarus | 2004 | 270 |
| An extreme distortion of the Van Allen belt arising from the 'Hallowe'en' solar storm in 2003 | Nature | 2004 | 264 |
| Relativistic electrons in the outer radiation belt: Differentiating between acceleration mechanisms | Journal of Geophysical Research | 2004 | 241 |
| The Cassini Cosmic Dust Analyzer | Space Science Reviews | 2004 | 192 |
| The Cassini Ultraviolet Imaging Spectrograph Investigation | Space Science Reviews | 2004 | 190 |
| Testing loss mechanisms capable of rapidly depleting relativistic electron flux in the Earth's outer radiation belt | Journal of Geophysical Research | 2004 | 153 |
| Solar irradiance variability during the October 2003 solar storm period | Geophysical Research Letters | 2004 | 147 |
| Neutrophilic Iron-Oxidizing Bacteria in the Ocean: Their Habitats, Diversity, and Roles in Mineral Deposition, Rock Alteration, and Biomass Production in the Deep-Sea | Geomicrobiology Journal | 2004 | 136 |
| Cluster observations of earthward flowing plasmoid in the tail | Geophysical Research Letters | 2004 | 110 |
| A composite Mg II index spanning from 1978 to 2003 | Space Weather | 2004 | 95 |
| Composition and structure of the Martian surface at high southern latitudes from neutron spectroscopy | Journal of Geophysical Research | 2004 | 94 |
| Auroral particle acceleration by strong double layers: The upward current region | Journal of Geophysical Research | 2004 | 91 |
| The origin of domes on Europa: The role of thermally induced compositional diapirism | Geophysical Research Letters | 2004 | 86 |
| Dusty plasma effects in Saturn's magnetosphere | Reviews of Geophysics | 2004 | 85 |
| Solar irradiance reference spectra for two solar active levels | Advances in Space Research | 2004 | 83 |
| Implications for hydrologic processes on Mars from extensive bedrock outcrops throughout Terra Meridiani | Nature | 2004 | 78 |
| Variations of 0.7–6.0 MeV electrons at geosynchronous orbit as a function of solar wind | Space Weather | 2004 | 78 |
| Physical models of the geospace radiation environment | Journal of Atmospheric and Solar-Terrestrial Physics | 2004 | 76 |
| Cassini UVIS observations of the Io plasma torus.I. Initial results | Icarus | 2004 | 74 |
| Cassini UVIS observations of the Io plasma torus: II. Radial variations | Icarus | 2004 | 69 |
| Solar wind control of Earth's H+ and O+ outflow rates in the 15-eV to 33-keV energy range | Journal of Geophysical Research | 2004 | 59 |
| Solar Irradiance Reference Spectra | Geophysical Monograph Series | 2004 | 57 |
| Haze aerosols in the atmosphere of early Earth: manna from heaven | Astrobiology | 2004 | 49 |
| Hydrated states of MgSO4 at equatorial latitudes on Mars | Geophysical Research Letters | 2004 | 48 |
