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A soft solid surface on Titan as revealed by the Huygens Surface Science Package

Zarnecki, John; Leese, Mark; Hathi, Brijen; Ball, Andrew; Hagermann, Axel; Towner, Martin; Lorenz, R. D.; McDonnell, James; Green, Simon F.; Patel, Manish; Ringrose, Tim; Rosenberg, Philip; Atkinson, K; Paton, M. D.; Banaszkiewicz, M.; Clark, B. C.; Ferri, F.; Fulchignoni, M; Ghafoor, N. A. L.; Kargl, G.; Svedhem, H.; Delderfield, J.; Grande, M.; Parker, D. J.; Challenor, P. G. and Geake, J. E. (2005). A soft solid surface on Titan as revealed by the Huygens Surface Science Package. Nature, 438(7069) pp. 792–795.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1038/nature04211
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Abstract

The surface of Saturn's largest satellite—Titan—is largely obscured by an optically thick atmospheric haze, and so its nature has been the subject of considerable speculation and discussion1. The Huygens probe entered Titan's atmosphere on 14 January 2005 and descended to the surface using a parachute system. Here we report measurements made just above and on the surface of Titan by the Huygens Surface Science Package. Acoustic sounding over the last 90 m above the surface reveals a relatively smooth, but not completely flat, surface surrounding the landing site. Penetrometry and accelerometry measurements during the probe impact event reveal that the surface was neither hard (like solid ice) nor very compressible (like a blanket of fluffy aerosol); rather, the Huygens probe landed on a relatively soft solid surface whose properties are analogous to wet clay, lightly packed snow and wet or dry sand. The probe settled gradually by a few millimetres after landing.

Item Type: Journal Article
ISSN: 1476-4687
Academic Unit/Department: Science > Physical Sciences
Science
Other Departments > Other Departments
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 6183
Depositing User: Users 6044 not found.
Date Deposited: 09 Jan 2007
Last Modified: 24 Jul 2014 09:25
URI: http://oro.open.ac.uk/id/eprint/6183
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