학술논문

Pancam multispectral imaging results from the Spirit rover at Gusev crater
Document Type
Academic Journal
Source
Science. August 6, 2004, Vol. 305 Issue 5685, p800, 7 p.
Subject
Spirit (Space probe) -- Observations
Mars (Planet) -- Research -- Properties
Geology -- Research -- Observations
Science and technology
Observations
Research
Properties
Language
English
ISSN
0036-8075
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.
On 4 January 2004 universal time coordinated, the Mars Exploration Rover, Spirit, landed on Mars at 14.5692°S, 175.4729°E, within the crater Gusev, a 160-km-diameter Noachian-age impact crater. Previous orbital remote [...]