| Literature DB >> 15297658 |
J F Bell1, S W Squyres, R E Arvidson, H M Arneson, D Bass, D Blaney, N Cabrol, W Calvin, J Farmer, W H Farrand, W Goetz, M Golombek, J A Grant, R Greeley, E Guinness, A G Hayes, M Y H Hubbard, K E Herkenhoff, M J Johnson, J R Johnson, J Joseph, K M Kinch, M T Lemmon, R Li, M B Madsen, J N Maki, M Malin, E McCartney, S McLennan, H Y McSween, D W Ming, J E Moersch, R V Morris, E Z Noe Dobrea, T J Parker, J Proton, J W Rice, F Seelos, J Soderblom, L A Soderblom, J N Sohl-Dickstein, R J Sullivan, M J Wolff, A Wang.
Abstract
Panoramic Camera images at Gusev crater reveal a rock-strewn surface interspersed with high- to moderate-albedo fine-grained deposits occurring in part as drifts or in small circular swales or hollows. Optically thick coatings of fine-grained ferric iron-rich dust dominate most bright soil and rock surfaces. Spectra of some darker rock surfaces and rock regions exposed by brushing or grinding show near-infrared spectral signatures consistent with the presence of mafic silicates such as pyroxene or olivine. Atmospheric observations show a steady decline in dust opacity during the mission, and astronomical observations captured solar transits by the martian moons, Phobos and Deimos, as well as a view of Earth from the martian surface.Entities:
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Year: 2004 PMID： 15297658 DOI： 10.1126/science.1100175
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728