Results 21 to 30 of about 265 (182)

The Optical Aurorae of Europa, Ganymede, and Callisto

The Planetary Science Journal, 2023
The tenuous atmospheres of the Galilean satellites are sourced from their surfaces and produced by a combination of plasma-surface interactions and thermal processes. Even though they are thin, these atmospheres can be studied via their auroral emissions,
Katherine de Kleer, Zachariah Milby, Carl Schmidt, Maria Camarca, Michael E. Brown   +4 more
doaj   +1 more source

Detecting an Ocean Inside Callisto With Geodetic Measurements From Europa Clipper and Juice

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Determining whether Callisto hosts a subsurface ocean, and the implications for material and energy transport through its hydrosphere, is of high interest to NASA's Europa Clipper and ESA's Juice missions. A recent reanalysis of Galileo magnetometer data strengthens the ocean hypothesis, but definitive confirmation awaits new measurements.
Flavio Petricca, Gael Cascioli, Erwan Mazarico   +2 more
wiley   +1 more source

Crater Morphometry on Callisto

The Planetary Science Journal
Impact crater formation is affected by the physical properties of planetary crusts, allowing comparison of crater dimensions to serve as a proxy for comparing the crustal properties of different planetary bodies.
V. J. Bray, P. M. Schenk
doaj   +1 more source

Discrete Energy Bands Beyond Galilean Moons: Bounce‐Phase Structuring of Jovian Magnetospheric Particles

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Discrete energy bands of ion fluxes, typically organized in velocity with equal separations, have been frequently observed in Jupiter's magnetosphere either in association with Galilean moons or in regions far from their influence. Here, we focus on the latter type and propose that these bands are manifestations of bounce‐phase structuring ...
Ya‐Ze Wu, Xu‐Zhi Zhou, Ze‐Fan Yin, Yixin Sun, Chao Yue, Qiugang Zong   +5 more
wiley   +1 more source

Delivery of Dust Particles from Protoplanetary Disks onto Circumplanetary Disks of Giant Planets

The Astrophysical Journal
The principal regular satellites of gas giants are thought to be formed by the accumulation of solid materials in circumplanetary disks (CPDs). While there has been significant progress in the study of satellite formation in CPDs, details of the supply ...
Natsuho Maeda, Keiji Ohtsuki, Ryo Suetsugu, Yuhito Shibaike, Takayuki Tanigawa, Masahiro N. Machida   +5 more
doaj   +1 more source

Ice chemistry on the Galilean satellites [PDF]

Journal of Geophysical Research: Planets, 1998
Jupiter's icy satellites Europa, Ganymede, and Callisto are subject to energy fluxes from electrons, photons, and magnetospheric plasma ion bombardment. As water ice and CO2 ice are thought to be present on their surfaces, the radiolysis of these materials over time should produce more complicated CHO‐containing molecules. These may include CH3OH, H2CO,
Mona L. Delitsky, Arthur L. Lane
openaire   +1 more source

Longitudinal Tracking of Astrocyte Reactivity During the Development of Chronic Orofacial Neuropathic Pain Using [18F]‐SMBT‐1 Positron‐Emission Tomography

Glia, Volume 74, Issue 8, August 2026.
Using [18F]‐SMBT‐1 PET, we longitudinally tracked MAO‐B–expressing reactive astrocytes during orofacial neuropathic pain development in rats, revealing region‐ and time‐specific astrocyte activation during pain chronification. ABSTRACT Chronic neuropathic pain represents a significant global health burden and is hypothesized to be maintained by an ...
Lewis S. Crawford, James W. M. Kang, OIivia I. Davanzo, Hyunsol Lim, Sabrina Salberg, Marissa Srgo, Crystal Li, Gaelle M. Emvalomenos, Bianca Jupp, Matthew Long, Wayne Noonan, Mohammad B. Haskali, Richelle Mychasiuk, Kevin A. Keay, Luke A. Henderson   +14 more
wiley   +1 more source

New Global Map of Io’s Volcanic Thermal Emission and Discovery of Hemispherical Dichotomies

The Planetary Science Journal
By combining multiple spacecraft and telescope data sets, the first fully global volcanic heat flow map of Io has been created, incorporating data down to spatial resolutions of ∼10 km pixel ^−1 in Io’s polar regions.
Ashley Gerard Davies, Jason E. Perry, David A. Williams, Glenn J. Veeder, David M. Nelson   +4 more
doaj   +1 more source

The Role of Magmatic Styles in Planetary Thermal Evolution Models

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract Previous studies that investigated the effects of magmatism on the interior dynamics, in particular for Earth‐sized planets, suggest that magmatism leads to more efficient mantle cooling. However, the extent to which different magmatic styles influence the thermal evolution of planets, and in particular smaller rocky bodies, has not yet been ...
C. Herrera, A.‐C. Plesa, J. Maia, D. Breuer   +3 more
wiley   +1 more source

Hot Spot Detections and Volcanic Changes on Io during the Juno Epoch: Orbits PJ5 to PJ55

The Planetary Science Journal
We report volcanic changes on Io since the last Galileo (2002) and New Horizons (2007) flybys as observed by NASA’s Juno spacecraft, examining Io’s volcanism down to the local scale (200 K at 325 individual sites of volcanic activity has been generated ...
Jason E. Perry, Ashley Gerard Davies, David A. Williams, David M. Nelson   +3 more
doaj   +1 more source