Results 1 to 10 of about 50,929 (190)
Multiple Components in Narrow Planetary Rings
Physical Review Letters, 2008 The phase-space volume of regions of regular or trapped motion, for bounded or scattering systems with two degrees of freedom respectively, displays universal properties.
C. D. Murray +9 more
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Dynamical Interactions and Mass Loss within the Uranian System
The Planetary Science Journal, 2023 The origin and evolution of planetary rings and moons remains an active area of study, particularly as they relate to the impact history and volatile inventory of the outer solar system.
Stephen R. Kane, Zhexing Li
doaj +1 more source
The Planetary Science Journal, 2023 The ζ ring is the innermost component of the Uranian ring system. It is of scientific interest because its morphology changed significantly between the Voyager 2 encounter in 1986 and subsequent Earth-based observations around 2007.
M. M. Hedman +5 more
doaj +1 more source
Planetary formation and early phases
Comptes Rendus. Physique, 2023 Planets form in proto-planetary disks. In this review, we describe the structure and properties of such disks, and the various phenomenons that lead to the final product: a planetary system. First, micrometre dust settles and coagulates.
Crida, Aurélien
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Simulating Secondary Electron and Ion Emission from the Cassini Spacecraft in Saturn’s Ionosphere
The Planetary Science Journal, 2023 The Cassini spacecraft’s Grand Finale flybys through Saturn’s ionosphere provided unprecedented insight into the composition and dynamics of the gas giant’s upper atmosphere and a novel and complex spacecraft–plasma interaction.
Z. Zhang +5 more
doaj +1 more source
The Discovery of Infrared Rings in the Planetary Nebula NGC 1514 During the WISE All-Sky Survey [PDF]
, 2010 We report the discovery of a pair of infrared, axisymmetric rings in the planetary nebula NGC 1514 during the course of the WISE all-sky mid-infrared survey.
Amy K. Mainzer +29 more
core +2 more sources
The Planetary Science Journal, 2023 In support of studies of decadal-timescale evolution of outer solar system atmospheres and ring systems, we present detailed Earth-based stellar occultation predictions for Jupiter, Saturn, Uranus, Neptune, Titan, and Triton for 2023–2050,
Richard G. French, Damya Souami
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Gap-opening Planets Make Dust Rings Wider
The Astrophysical Journal, 2023 As one of the most commonly observed disk substructures, dust rings from high-resolution disk surveys appear to have different radial widths. Recent observations on PDS 70 and AB Aur reveal not only planets in the disk, but also the accompanying wide ...
Jiaqing Bi, Min-Kai Lin, Ruobing Dong
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A Recent Impact Origin of Saturn’s Rings and Mid-sized Moons
The Astrophysical Journal, 2023 We simulate the collision of precursor icy moons analogous to Dione and Rhea as a possible origin for Saturn’s remarkably young rings. Such an event could have been triggered a few hundred million years ago by resonant instabilities in a previous ...
L. F. A. Teodoro +7 more
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The New Class of Dusty DAZ White Dwarfs [PDF]
, 2007 Our mid-infrared survey of 124 white dwarfs with the Spitzer Space Telescope and the IRAC imager has revealed an infrared excess associated with the white dwarf WD 2115-560 naturally explained by circumstellar dust.
Fergal Mullally +7 more
core +3 more sources