Whitepaper #304 submitted to the Planetary Science and Astrobiology Decadal Survey 2023-2032. Topics: giant planets systems
The magnetospheres of the giant planets are of keen interest owing to their size, fast rotation rate, and strong magnetic fields. Unique plasma sources arise from their moons and rings. We discuss the importance of ion composition measurements in the giant-planet magnetospheres, with particular focus on the ice giants Uranus and Neptune.