Three Questions about the Enceladus Plumes: Are Large Vapor Chambers Necessary? Do the Plumes Vary in Strength from Year to Year? Do Fractal Aggregates Fit the Brightness Data as Well as Solid Ice?

Andrew P. Ingersoll1, Miki Nakajima1, Shawn Ewald1 and Peter Gao2, (1)California Institute of Technology, Pasadena, CA, United States, (2)Carnegie Institution for Science, Earth & Planets Laboratory, Washington, DC, United States