Enceladus Plume Structure and Time Variability: Comparison of Cassini Observations Teolis, Ben D. ; Perry, Mark E. ; Hansen, Candice J. ; Waite, J. Hunter ; Porco, Carolyn C. ; Spencer, John R. ; Howett, Carly J. A. Abstract Publication: Astrobiology Pub Date: September 2017 DOI: 10.1089/ast.2017.1647 Bibcode: 2017AsBio..17..926T