Results 191 to 200 of about 1,104 (222)

Internal structures of the Galilean satellites

Icarus, 1981
New models for the interiors of Io, Ganymede, and Callisto are proposed. The model of Io consists of a thin, high-rigidity outer layer separated from a solid interior by a thin, molten or partially molten shell. The modulus of rigidity of the outer layer must be at least 100 times larger than that of the underlying partially molten shell.
Schubert, G., Stevenson, D. J., Ellsworth, K.   +2 more
openaire   +2 more sources

Strength of the lithosphere of the Galilean satellites

Icarus, 2006
Abstract Several approaches have been used to estimate the ice shell thickness on Callisto, Ganymede, and Europa. Here we develop a method for placing a strict lower bound on the thickness of the strong part of the shell (lithosphere) using measurements of topography.
K LUTTRELL, D SANDWELL
openaire   +1 more source

Atlas of the Galilean Satellites

2010
Complete color global maps and high-resolution mosaics of Jupiter's four large moons – Io, Europa, Ganymede and Callisto – are compiled for the first time in this important atlas. The satellites are revealed as four visually striking and geologically diverse planetary bodies: Io's volcanic lavas and plumes and towering mountains; Europa's fissured ice ...
openaire   +1 more source

Icy craters on the Galilean satellites?

Icarus, 1978
The high degree of echo depolarization observed for linearly polarized incident waves in the case of radar observations of Europa, Ganymede, and Callisto is consistent with a rough, icy surface. Measurements with circularly polarized waves, however, conducted in 1976 suggest that the types of surface irregularities found on the Galilean satellites must
Steven J. Ostro, Gordon H. Pettengill
openaire   +1 more source

Galilean satellite mission concepts

Astrodynamics Conference, 1982
Post-Galileo mission concepts considered possible for satellite-intensive investigations are presented, with consideration given to single and multiple target scenarios using orbiter and lander deployments. Candidate missions that satisfy the selected science objectives are identified, and specific scenario/target combinations which fall within ...
J. SOLDNER, M. STANCATI, H. FEINGOLD
openaire   +1 more source

Perturbation of an orbiter of a Galilean satellite by the other satellites

Acta Astronautica, 1983
In this paper the perturbation of an orbiter of one of the Galilean satellites by the other Galilean satellites of Jupiter is investigated. The attraction of a perturbing satellite is averaged over one revolution assuming a circular orbit. The perturbation can then easily be represented by elliptic integrals.
openaire   +2 more sources

On the Migration of the Galilean Satellites

2014
Topic 67: Solar System ...
Lee, MH, Li, WY
openaire   +1 more source

Problems on the Galilean satellites of Jupiter

Celestial Mechanics, 1975
The purpose of this paper is to present a critical review of some problems concerning the dynamics of Jupiter's Galilean system of satellites. Theory, ephemeris and observation are considered.
openaire   +1 more source

The Atmospheres of Titan and the Galilean Satellites

Journal of the Atmospheric Sciences, 1974
The stability of various atmospheres on Titan and the Galilean satellites is examined relative to escape. One method consists of the comparison of exospheric temperature and a blow-off temperature defined for the various constituents. Another method consists of the evaluation of outflow based on a polytropic model. Hydrogen, methane, nitrogen, and neon
openaire   +1 more source

UBV photometry of the Galilean satellites

Icarus, 1975
UBV observations of the Galilean satellites made at Lowell Observatory and Cerro Tololo Inter-American Observatory during 1973 and 1974 are reported. The dependence of brightness on solar phase angle for various faces of each satellite is determined.
openaire   +1 more source