Cassini Observes the Active South Pole of Enceladus
- C. Porco, P. Helfenstein, S. Squyres
- Geology, PhysicsScience
- 10 March 2006
The shape of Enceladus suggests a possible intense heating epoch in the past by capture into a 1:4 secondary spin/orbit resonance.
Cassini Imaging of Jupiter's Atmosphere, Satellites, and Rings
- C. Porco, R. West, A. Vasavada
- Physics, GeologyScience
- 7 March 2003
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.
Enceladus's measured physical libration requires a global subsurface ocean
- P. Thomas, R. Tajeddine, C. Porco
- Geology, Physics
- 24 September 2015
Eruptions arising from tidally controlled periodic openings of rifts on Enceladus
- T. Hurford, P. Helfenstein, G. Hoppa, Richard Greenberg, B. Bills
- 17 May 2007
A mechanism in which temporal variations in tidal stress open and close the tiger-stripe rifts, governing the timing of eruptions is reported, implying that Enceladus’ icy shell behaves as a thin elastic layer, perhaps only a few tens of kilometres thick.
Galileo Encounter with 951 Gaspra: First Pictures of an Asteroid
- M. Belton, J. Veverka, C. Pilcher
- 18 September 1992
Galileo images of Gaspra reveal it to be an irregularly shaped object that appears to have been created by a catastrophic collisional disruption of a precursor parent body.
Observation of moist convection in Jupiter's atmosphere
- P. Gierasch, A. Ingersoll, Galileo Imaging Team
- Physics, Environmental ScienceNature
- 10 February 2000
It is concluded that moist convection—similar to large clusters of thunderstorm cells on the Earth—is a dominant factor in converting heat flow into kinetic energy in the jovian atmosphere.
Cassini Imaging Science: Initial Results on Saturn's Rings and Small Satellites
Images acquired of Saturn's rings and small moons by the Cassini Imaging Science Subsystem have produced many new findings, including new saturnian moons; refined orbits of new and previously known moons; ring particle albedos in select ring regions; and never-before-seen phenomena within the rings.
Shapes of the saturnian icy satellites and their significance
- P. Thomas, J. Burns, R. Jacobson
- Geology, Physics
- 1 October 2007
Physical characterization of asteroid surfaces from photometric analysis
- P. Helfenstein, J. Veverka
- Physics, Geology
The feasibility of using photometric models like Hapke's (1981, 1984, 1986) equation for deriving physical properties of asteroids from photometric observations is discussed. Using data for Ceres and…
Imaging of Titan from the Cassini spacecraft
Observations of Titan from the imaging science experiment onboard the Cassini spacecraft reveal intricate surface albedo features that suggest aeolian, tectonic and fluvial processes, and imply that substantial surface modification has occurred over Titan's history.