Results 21 to 30 of about 50,929 (190)

Material around the Centaur (2060) Chiron from the 2018 November 28 UT Stellar Occultation

The Planetary Science Journal, 2023
A stellar occultation of Gaia DR3 2646598228351156352 by the Centaur (2060) Chiron was observed from the South African Astronomical Observatory on 2018 November 28 UT.
Amanda A. Sickafoose, Stephen E. Levine, Amanda S. Bosh, Michael J. Person, Carlos A. Zuluaga, Bastian Knieling, Mark C. Lewis, Karsten Schindler   +7 more
doaj   +1 more source

Generic occurrence of rings in rotating systems

, 2000
In rotating scattering systems, the generic saddle-center scenario leads to stable islands in phase space. Non-interacting particles whose initial conditions are defined in such islands will be trapped and form rotating rings.
Benet, Benet, Ding, Ding, Dullin, Goldreich, Hénon, L Benet, Meyer, Smith, Smith, T.H Seligman, Tél   +12 more
core   +1 more source

A parametric study for the design of an optimized ultrasonic-percussive planetary drill tool [PDF]

, 2016
Traditional rotary drilling for planetary rock sampling, in situ analysis, and sample return are challenging because the axial force and holding torque requirements are not necessarily compatible with lightweight spacecraft architectures in low-gravity ...
Harkness, Patrick, Li, Xuan, Lucas, Margaret, Timoney, Ryan, Worrall, Kevin   +4 more
core   +1 more source

Eccentric Disks with Self-gravity

The Astronomical Journal
Can a disk orbiting a central body be eccentric, when the disk feels its own self-gravity and is pressureless? Contradictory answers appear in the literature. We show that, to linear order in eccentricity, such a disk can be eccentric, but only if it has
Yoram Lithwick, Eugene Chiang, Leon Mikulinsky, Zhenbang Yu   +3 more
doaj   +1 more source

A Survey of Cassini Images of Spokes in Saturn’s Rings: Unusual Spoke Types and Seasonal Trends

The Planetary Science Journal
Spokes are localized clouds of fine particles that appear over the outer part of Saturn's B ring. Over the course of the Cassini mission, the Imaging Science Subsystem obtained over 20,000 images of the outer B ring, providing the most comprehensive data
S. R. Callos, M. M. Hedman, D. P. Hamilton   +2 more
doaj   +1 more source

The Case for Future Gravity Science Investigations at Saturn with a Planetary Orbiter

The Planetary Science Journal, 2023
The next phase in the robotic exploration of the Saturnian system will target unresolved questions about the gas giant’s atmosphere, interior, magnetosphere, and rings that were left open by investigations on board the Cassini mission.
Marzia Parisi
doaj   +1 more source

Origin and Evolution of Saturn's Ring System

, 2009
The origin and long-term evolution of Saturn's rings is still an unsolved problem in modern planetary science. In this chapter we review the current state of our knowledge on this long-standing question for the main rings (A, Cassini Division, B, C), the
A. Brahic, A. F. Cook, A. Harris, A. S. Bosh, A. Toomre, A.J. Farmer, B. J. Buratti, B.A. Smith, B.A. Smith, B.J.R. Davidsson, C. C. Porco, C. F. Gammie, C. F. McKee, C. Leyrat, C. W. Ormel, C.C. Porco, C.C. Porco, C.D. Murray, C.D. Murray, C.D. Murray, C.D. Murray, D. Koschny, D. N. C. Lin, D. Ryu, D. Spaute, D. Stöffler, D.C. Jewitt, D.D. Davis, D.J. Stevenson, D.P. Hamilton, D.P. Rubincam, E. Asphaug, E. Karkoschka, E.A. Roche, E.J. Öpik, F. Postberg, F. Poulet, F. Poulet, F. Poulet, F. Poulet, F. Poulet, F. Spahn, F. Spahn, F. Spahn, F.H. Shu, F.H. Shu, F.H. Shu, G. E. Morfill, G. W. Wetherill, G.W. Null, H. Daisaka, H. E. Mitler, H. Ji, H. Salo, H.B. Throop, H.F. Levison, H.J. Völk, I. Mosqueira, I. Mosqueira, I. Pater de, I. Pater de, I. Pater de, I.I. Shevchenko, J. A. Burns, J. A. Wood, J. B. Pollack, J. B. Pollack, J. B. Pollack, J. B. Pollack, J. B. Pollack, J. B. Pollack, J. Bauer, J. Dohnanyi, J. E. Colwell, J. E. Colwell, J. E. Colwell, J. F. Hawley, J. F. Vedder, J. Horner, J. I. Lunine, J. M. Stone, J. N. Cuzzi, J. N. Cuzzi, J. N. Cuzzi, J. N. Cuzzi, J. N. Cuzzi, J. N. Cuzzi, J. Schmidt, J.B. Holberg, J.E. Colwell, J.E. Colwell, J.F. Cooper, J.H. Cuzzi, J.J Lissauer, J.J. Lissauer, J.J. Lissauer, J.J. Lissauer, J.J. Lissauer, J.J. Lissauer, J.M. Barbara, J.N. Cuzzi, K. H. Baines, K. Nakazawa, K. Ohtsuki, K. Ohtsuki, K. Tsiganis, K. Zahnle, L. Dones, L. Dones, L. J. Horn, L. R. Doyle, L.S. Chambers, L.W. Esposito, L.W. Esposito, L.W. Esposito, L.W. Esposito, L.W. Esposito, L.W. Esposito, M. A. Barucci, M. Landgraf, M. R. Showalter, M. Sremčević, M. Sremčević, M. Sremčević, M.C. Lewis, M.J. Duncan, M.M. Hedman, M.M. Hedman, M.M. Hedman, M.M. Hedman, M.R. Showalter, M.R. Showalter, M.R. Showalter, M.R. Showalter, M.S. Tiscareno, M.S. Tiscareno, M.S. Tiscareno, N. Albers, N. Altobelli, N. Borderies, N.V. Brilliantov, O. C. Winter, O. Hubickyj, P. Bodenheimer, P. Goldreich, P. Goldreich, P. Goldreich, P. Goldreich, P. Goldreich, P. O. Lagage, P. R. Estrada, P. R. Estrada, P. R. Estrada, P. S. Goldreich, P.D. Nicholson, P.D. Nicholson, P.D. Nicholson, R. H. Durisen, R. H. Durisen, R. H. Durisen, R. H. Durisen, R. H. Durisen, R. H. Durisen, R. Karjalainen, R. Karjalainen, R. M. Canup, R. Smoluchowski, R. Smoluchowski, R. Srama, R.G. French, R.M. Canup, R.M. Canup, R.M. Canup, S. A. Balbus, S. Chandrasekhar, S. Charnoz, S. Charnoz, S. Charnoz, S. Charnoz, S. Charnoz, S. J. Weidenschilling, S. Kempf, S. M. Giuliatti Winter, S. M. Giuliatti Winter, S. M. Giuliatti Winter, S. Renner, S.F. Dermott, S.J. Weidenschilling, S.W. Kieffer, S.W. Kieffer, T. G. Northrop, T. Gehrels, T. Pöschel, T. Takeuchi, V. Ossenkopf, W. Benz, W. Cabot, W.-H. Ip, W.-H. Ip, W.H. Ip, Y. Nakagawa, Y. Shen   +201 more
core   +1 more source

Warm Saturns: On the Nature of Rings around Extrasolar Planets that Reside Inside the Ice Line [PDF]

, 2011
We discuss the nature of rings that may exist around extrasolar planets. Taking the general properties of rings around the gas giants in the Solar System, we infer the likely properties of rings around exoplanets that reside inside the ice line.
Barnes, Barnes, Carter, Carter, Chandrasekhar, Chatterjee, Dunham, Fabrycky, Henon, Henon, Hilke E. Schlichting, Hut, Jackson, Laplace, Lin, Murray, Ohta, Philip Chang, Ragozzine, Roche, Schlichting, Seager, Tremaine, Vieira Neto, Winn, Winn, Wright, Wu, Wu   +28 more
core   +2 more sources

Planetary Rings [PDF]

, 2013
82 pages, 34 figures. Final revision of general review to be published in "Planets, Stars and Stellar Systems", P. Kalas and L. French (eds.), Springer (http://refworks.springer.com/sss)
openaire   +2 more sources

Ringed versus Ringless Worlds: How Poynting–Robertson Drag Shapes Rings across the Solar System

The Astrophysical Journal Letters
Planetary rings are not only ubiquitous around the giant planets in the outer solar system, but have also been discovered around several small distant bodies. In contrast, no rings have been observed around any inner solar system objects.
Ryuki Hyodo, Shigeru Ida
doaj   +1 more source