Results 51 to 60 of about 20,660,199 (171)

Mesoscale Modeling of Titan’s Shangri‐La Region: The Impact of Surface Properties on Winds

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract The knowledge of Titan’s near‐surface atmosphere is sparse. The Huygens descent probe measured winds, and the multiple dune field observations and possible dust storms suggest active near‐surface dynamics. The Dragonfly rotorcraft lander will fly close to the surface in the Shangri‐La region, near the Huygens landing site, where complex dune ...
Maxence Lefèvre, Léa E. Bonnefoy, Aymeric Spiga, Bruno de Batz de Trenquelléon, Sébastien Lebonnois, Alexander G. Hayes   +5 more
wiley   +1 more source

Giant Planets [PDF]

, 2015
In: Gerald Schubert (editor-in-chief) Treatise on Geophysics, 2nd edition, Vol 10. Oxford: Elsevier; 2015. p. 529-557. 42 pages, 16 figures. Accepted 25 February 2014.We review the interior structure and evolution of Jupiter, Saturn, Uranus and Neptune,
Guillot, Tristan, Gautier, Daniel, Daniel Gautierb, T. Guillot, D. Gautier, Tristan Guillota   +5 more
core   +1 more source

A Pan-STARRS1 Search for Planet Nine

The Astronomical Journal
We present a search for Planet Nine using the second data release of the Pan-STARRS1 survey. We rule out the existence of a Planet Nine with the characteristics of that predicted in Brown & Batygin to a 50% completion depth of V = 21.5.
Michael E. Brown, Matthew J. Holman, Konstantin Batygin   +2 more
doaj   +1 more source

Current Sheet Geometry and Heavy Ion Influence on Reconnection

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract In some planetary magnetospheres singly ionized heavy ion species can be found in addition to the typical hydrogen. The presence of these ions can affect many magnetospheric processes. The role heavy ions, specifically oxygen, and the thickness of the current sheet play in magnetic reconnection is investigated using particle‐in‐cell ...
Cristian R. Radulescu, Daniel Verscharen, Yuto Katoh, Yohei Kawazura, Seiji Zenitani, Andrew J. Coates, Yasumasa Kasaba   +6 more
wiley   +1 more source

From planetesimals to planets: volatile molecules [PDF]

, 2014
Context. Solar and extrasolar planets are the subject of numerous studies aiming to determine their chemical composition and internal structure. In the case of extrasolar planets, the composition is important as it partly governs their potential ...
Amaury Thiabaud, Cabral, N., Alibert, Yann, Nahuel Cabral, Alibert, Y., Ulysse Marboeuf, Benz, Willy, Willy Benz, Cabral, Nahuel, Thiabaud, Amaury, Marboeuf, Ulysse, Marboeuf, U., Thiabaud, A., Yann Alibert, Benz, W.   +14 more
core   +1 more source

ORCHARD: A General Planetary Evolution Code

The Astrophysical Journal
We present ORCHARD , a publicly available planetary evolution code based on the gas giant evolution code, APPLE , capable of modeling the evolution and structures of terrestrial, super-Earth, sub-Neptune, Neptune, and gas giant planets and exoplanets ...
Roberto Tejada Arevalo, Adam Burrows, Ankan Sur, Yubo Su   +3 more
doaj   +1 more source

Elastic Properties of Titan Tholins Revealed by Brillouin Spectroscopy

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Titan tholins, complex organic solids synthesized by simulating photochemical processes in Titan's atmosphere, are widely regarded as analogs to organic surface materials on the Saturnian moon. Their mechanical properties are critical for understanding the evolution of Titan's geomorphology and crustal layering.
Mark A. Johnson, Jose R. Montes‐Bojorquez, Adis Husić, Xinting Yu, Wenhao Su, Jia‐Sen Hu, Ryan Blase, Edward Patrick, Alan Whittington, Jin S. Zhang   +9 more
wiley   +1 more source

The Link between Athor and EL Meteorites Does Not Constrain the Timing of the Giant Planet Instability

The Astrophysical Journal Letters
The asteroid Athor, residing today in the inner main asteroid belt, has been recently identified as the source of EL enstatite meteorites to Earth. It has been argued that Athor formed in the terrestrial region—as indicated by a similarity in isotopic ...
André Izidoro, Rogerio Deienno, Sean N. Raymond, Matthew S. Clement   +3 more
doaj   +1 more source

Neutral Wind Control of Jupiter's Non‐Auroral Ionosphere

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract We use JAMMIES (JAMMIES is Another Model Making Ionospheric EStimates), a new model of Jupiter's non‐auroral ionosphere, to demonstrate that neutral wind‐driven field‐aligned plasma transport can explain decades of measurements inconsistent with a solar‐dominated ionosphere. Two observations highlight these inconsistencies: a minimum in H3+ ${\
K. Mohamed, O. Agiwal, L. Moore, I. Mueller‐Wodarg, J. D. Huba, C. Martinis, T. Stallard, H. Melin   +7 more
wiley   +1 more source

Separating gas-giant and ice-giant planets by halting pebble accretion

, 2014
In the solar system giant planets come in two flavours: gas giants (Jupiter and Saturn) with massive gas envelopes, and ice giants (Uranus and Neptune) with much thinner envelopes around their cores.
Lambrechts, Michiel, A. Johansen, Johansen, Anders,, A. Morbidelli, Morbidelli, A., Johansen, A., Johansen, Anders, Lambrechts, M., M. Lambrechts   +8 more
core   +1 more source