Science Seminars

11/20/2014 Seminar – Geysers, Spiders and Arcade Icons – a Tour of the Unlikely Characters of Saturn’s Icy Satellites.

Speaker: Carly Howett (Southwest Research Institute)
Date: Friday, Nov 20, 2020
Time: 4:00 pm
Location: SPSC W120

Seminar Abstract:

For over a decade Cassini has been touring the Saturn-system, observing how the icy satellites vary spatially, temporally and spectrally. This has lead to many major discoveries, including Enceladus’ activity and geysers, an anomalous “spider” crater on Rhea and thermal anomalies in the shape of the arcade character “Pac-Man” on Mimas, Tethys and Dione.  Data from Cassini’s Composite Infrared Spectrometer (CIRS) has been vital in these discoveries since both day- and night-time icy satellite surface temperatures can be derived from its 10 to 1400 cm-1 (7 to 1000 μm) wavenumber coverage. This talk will walk through these major discoveries, telling the story of how they were made and their implications.