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13 -- The Deep Cold Biosphere? Interior Processes of Icy Satellites and Dwarf Planets
THURSDAY, April 17, 2008: MORNING
Julie Castillo
Jet Propulsion Laboratory/California Institute of Technology
Pasadena, CA, USA
Steve Vance
University of Washington
Seattle, WA, USA
Description
Recent observations highlight the dynamic nature of icy objects in the outer solar system. The surface geology and compositional spectra of objects such as Enceladus, Titan, Europa, Hyperion, Ceres, or Kuiper-Belt Objects hint at diverse subsurface chemical, physical, and possibly biological processes. Of particular interest to the study of astrobiology is the possibility for oceans and hydrothermal systems in these objects -- past, present, or future. In this session, we invite discussion of subsurface processes -- and means for detecting them -- in objects in the outer solar system.
ORAL SESSION
9:45 13-11-O. Long-Lived Serpentinization Activity in Habitable Icy Worlds [invited]
S. Vance, R. Pappalardo
10:15 13-03-O. Molecules in the Geyser from Enceladus J. Greaves
10:30 13-06-O. Radiolytic Destruction of NH3 as a Subsurface Source of NO3 and
Ultimately N2 [invited]
T. Onstott, R. Raymond, D. Sigman, B. Mislowack, L. Pratt, L. Lefticariu
10:45 13-09-O. Habitability of Enceladus: Planetary Conditions for Life
C. Parkinson, A. Barr, M.-C. Liang, Y. Yung
11:00 BREAK
11:15 13-02-O. Thermal Evolution of Kuiper Belt Objects S. Desch
11:30 13-01-O. Impact of Hydrothermal Chemistry on the Geophysical Evolution
of Icy Bodies J. Castillo, S. Vance, T. McCord, D. Matson
11:45 13-08-O. Hydrothermal Circulation in Icy Bodies J. Palguta, G. Schubert, B. Travis
POSTERS
13-07-P. Isolation and Stability of Distinct Subsurface Microbial Communities Associated
with Two Hydrothermal Vent Systems: Implications for Extraterrestrial
Subsurface Biospheres A. Opatkiewicz, J. Baross, D. Butterfield
13-04-P. Can the Phototaxis System be Selected for by Photon Flux at Deep-Sea
Hydrothermal Systems on Earth and Other Planets? M. Lin, J.A. Baross, D.S. Kelley
13-05-P. Origin of Life in Ice: Prospects for the Solar System and Beyond
J. Lipps, D. Schulze-Makuch
13-10-P. Impact Gardening on Europa C. Phillips, L. Grossman