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Radiation forces on small particles in the solar system
Abstract We present a new and more accurate expression for the radiation pressure and Poynting-Robertson drag forces; it is more complete than previous ones, which considered only perfectly absorbingExpand
Cassini Observes the Active South Pole of Enceladus
The shape of Enceladus suggests a possible intense heating epoch in the past by capture into a 1:4 secondary spin/orbit resonance. Expand
Cassini Imaging Science: Instrument Characteristics And Anticipated Scientific Investigations At Saturn
The Cassini Imaging Science Subsystem (ISS) is the highest-resolution two-dimensional imaging device on the Cassini Orbiter and has been designed for investigations of the bodies and phenomena foundExpand
Cassini Imaging of Jupiter's Atmosphere, Satellites, and Rings
Findings on Jupiter's zonal winds, convective storms, low-latitude upper troposphere, polar stratosphere, and northern aurora are reported, including previously unseen emissions arising from Io and Europa in eclipse, and a giant volcanic plume over Io's north pole are described. Expand
Elementary derivation of the perturbation equations of celestial mechanics
The equations of celestial mechanics that govern the time rates of change of the orbital elements are completely derived using elementary dynamics, starting from only Newton’s equation and itsExpand
Pencil-Beam Surveys for Faint Trans-Neptunian Objects
Motivated by a desire to understand the size distribution of objects in the Edgeworth-Kuiper belt, an observing program has been conducted at the Palomar 5 m and Canada-France-Hawaii 3.6 mExpand
Enceladus's measured physical libration requires a global subsurface ocean
Abstract Several planetary satellites apparently have subsurface seas that are of great interest for, among other reasons, their possible habitability. The geologically diverse saturnian satelliteExpand
Shapes of the saturnian icy satellites and their significance
The sizes and shapes of six icy saturnian satellites have been measured from Cassini Imaging Science Subsystem (ISS) data, employing limb coordinates and stereogrammetric control points. Mimas,Expand
The Exchange of Impact Ejecta Between Terrestrial Planets
Orbital histories of ejecta from the terrestrial planets were numerically integrated to study their transfer to Earth. The properties of the lunar and martian meteorites are consistent with aExpand
The astronomical theory of climatic change on Mars
Abstract We examine the response of Martian climate to changes in solar energy deposition caused by variations of the Martian orbit and obliquity. We systematically investigate the seasonal cycles ofExpand