U003:
Cassini's Grand Finale: Discoveries and Science Highlights





Session ID#: 24261

Session Description:
After 13 years in orbit around Saturn, the Cassini-Huygens mission ended with a dramatic plunge into Saturn's atmosphere in September 2017 sending back data until Cassini tumbled and vaporized in Saturn's atmosphere. Preceding the final plunge, Cassini executed a series of 20 Ring-Grazing orbits just outside Saturn’s main rings followed by 22 highly inclined Grand Finale orbits with closest approaches between the innermost rings and atmosphere. This Union session will highlight new Cassini discoveries from multiple disciplines including magnetospheric physics, outer solar system planetary and ring science, and space physics. Topics will include new results on Saturn's gravitational and magnetic fields; Saturn's ring mass; first in-situ sampling of main ring particles, Saturn's plasma environment, upper atmosphere and exosphere; high resolution imaging, spectra and radar measurements of both Saturn and its rings, using data collected during this once-in-a-lifetime opportunity to explore Saturn in a region where no spacecraft had flown before.
Primary Convener:  Scott G Edgington, Jet Propulsion Laboratory, Pasadena, CA, United States
Convener:  Marcia E Burton, NASA Jet Propulsion Laboratory, Pasadena, CA, United States
Index Terms:

2730 Magnetosphere: inner [MAGNETOSPHERIC PHYSICS]
6265 Planetary rings [PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS]
6275 Saturn [PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS]
7845 Particle acceleration [SPACE PLASMA PHYSICS]

Abstracts Submitted to this Session:

Zhimeng Zhang1, Michael A Janssen1, Charles Elachi2, Richard West1, Stephen D Wall1, Jeffrey N Cuzzi3, Alexander Hayes4 and Yanhua Z Anderson1, (1)Jet Propulsion Laboratory, Pasadena, CA, United States, (2)JPL, Pasadena, CA, United States, (3)NASA Ames Research Center, Moffett Field, CA, United States, (4)Cornell University, Department of Astronomy, Ithaca, NY, United States
Michele Karen Dougherty1, Hao Cao2,3, Krishan K Khurana4, Gregory James Hunt1, Gabrielle Provan5, Stephen Kellock1, Marcia E Burton6, Thomas A. Burk6 and The Cassini Magnetometer Team, (1)Imperial College London, Blackett Laboratory, London, United Kingdom, (2)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States, (3)Harvard University, Department of Earth and Planetary Sciences, Boston, MA, United States, (4)University of California Los Angeles, Los Angeles, CA, United States, (5)University of Leicester, Leicester, United Kingdom, (6)JPL, Pasadena, CA, United States
Luciano Iess1, Paolo Racioppa2, Daniele Durante2, Mirco Mariani Jr2, Aseel Anabtawi3, John W. Armstrong3, Luis Gomez Casajus4, Paolo Tortora5 and Marco Zannoni6, (1)Universit� di Roma La Sapienza, Roma, Italy, (2)Sapienza University of Rome, Rome, Italy, (3)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (4)University of Bologna, Bologna, Italy, (5)Universita di Bologna, Forli, I- 47121, Italy, (6)University of Bologna, Department of Industrial Engineering, Bologna, Italy
Linda Joyce Spilker, Jet Propulsion Laboratory, Monrovia, CA, United States
Sean Hsu1, Marcia E Burton2, Mihaly Horanyi3, Sascha Kempf4, Nozair Khawaja5, Georg Moragas-Klostermeyer6, Frank Postberg5, Daniel Schirdenwahn7, Martin Seiss7, Juergen Schmidt8, Frank Spahn7 and Ralf Srama6, (1)University of Colorado Boulder, Boulder, CO, United States, (2)JPL, Pasadena, CA, United States, (3)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (4)LASP/University of Colorado, Boulder, CO, United States, (5)University of Heidelberg, Heidelberg, Germany, (6)University of Stuttgart, Stuttgart, Germany, (7)University of Potsdam, Potsdam, Germany, (8)University of Oulu, Oulu, Finland
Jack H Waite Jr, University of Texas at San Antonio, San Antonio, TX, United States and The Cassini Ion and Neutral Mass Spectrometer Team
William S Kurth1, Rolf Bostrom2, Patrick Canu3, Baptiste Cecconi4, Nicole Cornilleau-Wehrlin3, William M Farrell5, Georg Fischer6, Patrick H. M. Galopeau7, Donald A Gurnett1, G Gustafsson2, George B Hospodarsky1, Laurent Lamy4, Alain Lecacheux4, Philippe Louarn8, Robert J. MacDowall5, John Douglas Menietti1, Ronan Modolo7, Michiko Morooka2, Arne Pedersen9, Ann M Persoon1, Ali H Sulaiman1, Jan-Erik Wahlund2, Shengyi Ye10 and Philippe M Zarka4, (1)University of Iowa, Iowa City, IA, United States, (2)IRF Swedish Institute of Space Physics Uppsala, Uppsala, Sweden, (3)Laboratoire de Physique des Plasmas, Palaiseau, France, (4)Observatoire de Paris, LESIA, Meudon, France, (5)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (6)Austrian Academy of Sciences, Vienna, Austria, (7)LATMOS/IPSL, UVSQ, Guyancourt, France, (8)IRAP, CNRS, Toulouse, France, (9)University of Oslo, Department of Physics, Oslo, Norway, (10)University of Iowa, Physics and Astronomy, Iowa City, IA, United States
Donald G Mitchell1, Stamatios M Krimigis2, Norbert Krupp3, Chris Paranicas4, Elias Roussos3, Peter Kollmann5 and The Cassini MIMI Science Team, (1)Johns Hopkins University Applied Physics Laboratory, Ellicott City, MD, United States, (2)Applied Physics Laboratory Johns Hopkins, Space, Laurel, MD, United States, (3)Max Planck Institute for Solar System Research, Göttingen, Germany, (4)Applied Physics Lab, Laurel, MD, United States, (5)Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States
Matthew S Tiscareno, SETI Institute Mountain View, Mountain View, CA, United States and Cassini Imaging Team

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