Results 41 to 50 of about 139,199 (220)

Formation of Water-rich Giant Planet Satellites at Decretion Disk Ice Lines

open access: yesThe Planetary Science Journal
The volatile budgets of giant planet satellites are critical to unraveling the origin of their building blocks within the circumplanetary disks that hosted them.
Teng Ee Yap, David J. Stevenson
doaj   +1 more source

A Geoscientific Review on CO and CO2 Ices in the Outer Solar System

open access: yesGeosciences, 2022
Ground-based telescopes and space exploration have provided outstanding observations of the complexity of icy planetary surfaces. This work presents our review of the varying nature of carbon dioxide (CO2) and carbon monoxide (CO) ices from the cold ...
Caitlin Ahrens   +2 more
doaj   +1 more source

NORi: An ML‐Augmented Ocean Boundary Layer Parameterization

open access: yesJournal of Advances in Modeling Earth Systems, Volume 18, Issue 9, September 2026.
Abstract NORi is a machine learning (ML) parameterization of ocean boundary layer (BL) turbulence that is physics‐based and augmented with neural networks. NORi stands for neural ordinary differential equations Richardson number (Ri) closure. The physical parameterization is controlled by a Richardson number‐dependent diffusivity and viscosity.
Xin Kai Lee   +6 more
wiley   +1 more source

The Stability of a Dense Crust Situated on Small Bodies

open access: yesThe Planetary Science Journal
Small planetary bodies in the solar system, including Io, Ganymede, and Callisto, may have a crust denser than their underlying mantle. Despite the inherent gravitational instability of such structures, we show that the growth timescale of the Rayleigh ...
Yoshinori Miyazaki, David J. Stevenson
doaj   +1 more source

New accurate ephemerides for the Galilean satellites of Jupiter

open access: yes, 2004
We present a new theory of the four Galilean satellites Io, Europa, Ganymede and Callisto. This theory aims to deliver highly accurate ephemerides able to represent the Galilean satellites' motion over several centuries.
A. Vienne   +7 more
core   +1 more source

Brine Entrainment During Ice Shell Growth on Icy Worlds

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract The role of ocean composition in governing ice shell growth and ocean longevity on icy satellites remains poorly constrained. To address this, we develop a thermomechanical model of small to mid‐sized icy worlds that simulates ice shell growth from a saline ocean, explicitly quantifying brine entrainment through a parameterization of reactive ...
Nina Gilkyson   +3 more
wiley   +1 more source

Control networks for the Galilean satellites, November 1979 [PDF]

open access: yes, 1979
Pictures of the four Galilean satellites taken as the two Voyager spacecraft approached Jupiter during March and July 1979 are presented. Control nets of the Galilean satellites, computed photogrammetrically, and measurements of the mean radii are ...
Katayama, F. Y.   +3 more
core  

Image-processing techniques in precisely measuring positions of Jupiter and its Galilean satellites

open access: yes, 2003
Two image-processing techniques are developed to measure precisely the positions of Jupiter and its Galilean satellites. One is used to detect the edge of Jupiter's CCD image and fit it with an ellipse, thereby obtaining the planetary center.
C. L. Zhang   +3 more
core   +1 more source

Updated Interior Structure of Callisto From a Reanalysis of Galileo Data

open access: yesGeophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract The internal structure of Callisto has been a long‐standing question since the Galileo mission. Previous analyses suggested a largely undifferentiated interior. We present an updated interior structure for Callisto derived from a reanalysis of Galileo's Doppler tracking data using new signal processing techniques.
G. Cascioli   +5 more
wiley   +1 more source

Onboard Science Instrument Autonomy for the Detection of Microscopy Biosignatures on the Ocean Worlds Life Surveyor

open access: yesThe Planetary Science Journal
The quest to find extraterrestrial life is a critical scientific endeavor with civilization-level implications. Icy moons in our solar system are promising targets for exploration because their liquid oceans make them potential habitats ...
Mark Wronkiewicz   +12 more
doaj   +1 more source

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