Results 41 to 50 of about 4,500 (216)
Evidence of Gaia Enceladus Experiencing at Least Two Passages around the Milky Way
The Astrophysical Journal LettersOne of the major recent breakthroughs has been the discovery of the last major merger to happen in the history of the Milky Way. Around 10 Gyr ago, the galaxy Gaia Enceladus with an estimated ∼10% of the Milky Way mass, fell into the potential of our ...
Ása Skúladóttir +6 more
doaj +1 more source
Brine Entrainment During Ice Shell Growth on Icy Worlds
Journal 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
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 +2 more
wiley +1 more source
The Potential for Organic Synthesis in the Ocean of Enceladus
The Astrophysical JournalThe Cassini spacecraft detected a soup of organics in the plume of Saturn’s moon Enceladus. Those compounds could provide building blocks for the potential emergence or sustenance of microbial life in Enceladus’ subsurface ocean. However, the sources and
Can Liu +8 more
doaj +1 more source
Spatial Distribution of Glycine and Aspartic Acid in Rapidly Frozen Brines Relevant to Enceladus
The Planetary Science Journal, 2023 Saturn’s moon Enceladus harbors a global, subsurface liquid ocean beneath an icy crust that actively erupts water jets from fissures in its south pole. Data returned from the Cassini mission have identified salts and organic matter within these ejected ...
Tuan H. Vu +3 more
doaj +1 more source
Geophysical Research Letters, 2009 Near infrared spectra of the surface of Enceladus returned by Cassini show the presence of an absorption feature at 3.53 μm, ascribed by Brown et al. (2006) to “short chain organics,” and by Newman et al. (2007) to hydrogen peroxide. We assign this feature tentatively to methanol.
Hodyss, Robert +6 more
openaire +2 more sources
Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.Abstract Saturn's ring current, which modulates the global magnetic field configuration, varies dynamically with hot plasma injections. However, quantifying transient magnetic field disturbances remains challenging in the absence of in situ measurements on Saturn's surface.
Yimeng Li +7 more
wiley +1 more source
The Effect of Salinity on Ocean Circulation and Ice–Ocean Interaction on Enceladus
The Planetary Science JournalObservational data suggest that the ice shell on Enceladus is thicker at the equator than at the pole, indicating an equator-to-pole ice flow. If the ice shell is in an equilibrium state, the mass transport of the ice flow must be balanced by the ...
Yaoxuan Zeng, Malte F. Jansen
doaj +1 more source
Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.Abstract The Uranian moons, last visited in 1986 by Voyager 2, remain an intriguing yet under‐explored set of targets. Understanding the thermal structure and evolution of these moons is key to addressing one of the highest priority goals in planetary science: identifying if any are ocean worlds today or have been in the past. On Oberon, one feature in
M. Blanco‐Rojas +2 more
wiley +1 more source