This session encompasses all aspects of ice-giant systems: the magnetospheres, satellites, rings, atmospheres, and interiors of Uranus and Neptune; their formation and evolution; and their relation to other planets in and beyond our solar system. Uranus and Neptune present us with several mysteries, including how they form, how their magnetic fields are generated, the energy balance of their atmospheres, and the nature of their rings and satellites, particularly those seen to be active (Triton) or with young surfaces (Miranda, Ariel). Radial migration of the ice giants may have had significant impact on the rest of the solar system. Looking beyond our system, the Kepler planet-finding spacecraft has shown that ice giants are common in our galaxy: most planets known today are thought to be ice giants. Observations, modeling, and theory related to the ice giants will inform the design of missions to Uranus and Neptune which are currently under consideration.
Kunio M Sayanagi, Elizabeth P Turtle, Krista M Soderlund, and
Mark D Hofstadter