Results 61 to 70 of about 1,104 (222)

Lava Lakes on Io: Crust Age and Implications for Thermal Output

The Planetary Science Journal
Recent observations by the JIRAM instrument on board NASA’s Juno spacecraft have confirmed that many of Io’s volcanic hotspots are active lava lakes, characterized by a colder central crust surrounded by a hotter peripheral ring.
Alessandro Mura, Rosaly M. C. Lopes, Federico Tosi, Peter J. Mouginis-Mark, Jani Radebaugh, Francesca Zambon, Matteo Paris, Scott Bolton, Alberto Adriani, Roberto Sordini, Andrea Cicchetti, Raffaella Noschese, Giuseppe Piccioni, Christina Plainaki, Giuseppe Sindoni   +14 more
doaj   +1 more source

Anisotropic Melt Inclusions as a Confounding Signal for Ice‐Penetrating Radar Observations

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Ice‐penetrating radar is a powerful geophysical tool for understanding the subsurfaces of Earth, Mars, and icy moons. Radar reflectivity, attenuation, and birefringence are used to infer subsurface hydrology, englacial temperature, water content, and crystal orientation fabric.
A. H. Cheng, D. M. Schroeder, N. S. Wolfenbarger, R. Shaper, C. Seltzer, B. Hills   +5 more
wiley   +1 more source

Comparing NASA Discovery and New Frontiers Class Mission Concepts for the Io Volcano Observer

The Planetary Science Journal
Jupiter’s moon Io is a highly compelling target for future exploration that offers critical insight into tidal dissipation processes and the geology of high heat flux worlds, including primitive planetary bodies, such as the early Earth, that are shaped ...
Christopher W. Hamilton, Alfred S. McEwen, Laszlo Keszthelyi, Lynn M. Carter, Ashley G. Davies, Katherine de Kleer, Kandis Lea Jessup, Xianzhe Jia, James T. Keane, Kathleen Mandt, Francis Nimmo, Chris Paranicas, Ryan S. Park, Jason E. Perry, Anne Pommier, Jani Radebaugh, Sarah S. Sutton, Audrey Vorburger, Peter Wurz, Cauê Borlina, Amanda F. Haapala, Daniella N. DellaGiustina, Brett W. Denevi, Sarah M. Hörst, Sascha Kempf, Krishan K. Khurana, Justin J. Likar, Adam Masters, Olivier Mousis, Anjani T. Polit, Aditya Bhushan, Michael Bland, Isamu Matsuyama, John Spencer   +33 more
doaj   +1 more source

Unified Analysis of Fermionic Tunneling, Barrow‐Exponential Entropy Corrections, and Plasma Lensing in Carrollian Reissner‐Nordström Spacetime

Annalen der Physik, Volume 538, Issue 3, March 2026.
Carrollian Reissner‐Nordström black holes are investigated through fermionic tunneling, entropy‐corrected thermodynamics, and plasma‐modified gravitational lensing. The generalized uncertainty principle introduces minimal‐length corrections to the Hawking temperature, while the combined Barrow‐Exponential entropy reveals smooth thermodynamic crossovers
Erdem Sucu, İzzet Sakallı, Yusuf Sucu
wiley   +1 more source

Dynamical history of the Galilean satellites for a fast migration of Callisto

, 2022
The dynamics of the innermost Galilean satellites (Io, Europa and Ganymede) is characterised by a chain of mean motion resonances, called Laplace resonance, and by a strong tidal dissipation that causes wide variations of their semi-major axes over large
Clara Grassi, Grassi, Clara, Saillenfest, Melaine, Melaine Saillenfest, Giacomo Lari, Lari, Giacomo   +5 more
core   +1 more source

Passive Microwave Radiometry and Active Radar Sounding as Complementary Tools for Geophysical Investigations of Icy Ocean Worlds

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Juno Microwave Radiometer (MWR) observations of Europa and Ganymede offer critical insights into the icy shells of these moons ahead of NASA's Europa Clipper and ESA's JUpiter ICy moons Explorer (JUICE) missions. Both missions are equipped with active radar sounders designed to address key unknowns such as ice shell thickness, thermal state ...
Natalie S. Wolfenbarger, Anna L. Broome, Dustin M. Schroeder, Anton I. Ermakov, Scott J. Bolton, Donald D. Blankenship   +5 more
wiley   +1 more source

Europa’s H2O2: Temperature Insensitivity and a Correlation with CO2

The Planetary Science Journal
H _2 O _2 is part of Europa’s water-ice radiolytic cycle and a potential source of oxidants to Europa’s subsurface ocean. However, factors controlling the concentration of this critical surface species remain unclear.
Peiyu Wu, Samantha K. Trumbo, Michael E. Brown, Katherine de Kleer   +3 more
doaj   +1 more source

Origin of Europa and the Galilean Satellites

, 2017
Europa is believed to have formed near the very end of Jupiter's own accretion, within a circumplanetary disk of gas and solid particles. We review the formation of the Galilean satellites in the context of current constraints and understanding of giant planet formation, focusing on recent models of satellite growth within a circumjovian accretion disk
Canup, Robin M., Ward, William R.
openaire   +2 more sources

Asymmetric Crater Relaxation on an Ice‐Rich Ceres Driven by Insolation

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Ceres has a high ice content within its crust and is the closest dwarf planet to the sun. The resultant high insolation levels at Ceres' surface (in comparison to the outer solar system) leads to high variations in surface temperature, which is dependent on both latitude and orientation of the slope (i.e., equatorward‐ or poleward‐facing).
I. F. Pamerleau, M. M. Sori, J. E. C. Scully   +2 more
wiley   +1 more source

Visible-infrared Spectra of keV Electron Irradiated Cryogenic Salts with Implications for Europa Surface Composition

The Planetary Science Journal
Visible to near-infrared spectral coloring of cryogenic halides, sulfates, their frozen brines, and sulfuric acid hydrate formed through one to tens of keV electron radiation can inform on the composition of Europa’s surface.
C. A. Hibbitts, K. Stockstill-Cahill, E. Lloyd, E. Gloesener, M. Choukroun, C. Paranicas, R. N. Clark   +6 more
doaj   +1 more source