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In Situ Evidence for an Ancient Aqueous Environment at Meridiani Planum, Mars
Sedimentary rocks at Eagle crater in Meridiani Planum are composed of fine-grained siliciclastic materials derived from weathering of basaltic rocks, sulfate minerals (including magnesium sulfate andExpand
Geologic mapping and characterization of Gale Crater and implications for its potential as a Mars Science Laboratory landing site
Background: Gale Crater is located at 5.3°S, 222.3°W (137.7°E) and has a diameter of ~155 km. It has b een a ta rget o f p articular i nterest d ue to the > 5 k m t all m ound o f layered materialExpand
The Opportunity Rover's Athena Science Investigation at Meridiani Planum, Mars
The Mars Exploration Rover Opportunity has investigated the landing site in Eagle crater and the nearby plains within Meridiani Planum. The soils consist of fine-grained basaltic sand and a surfaceExpand
Mineralogy of a Mudstone at Yellowknife Bay, Gale Crater, Mars
Sedimentary rocks at Yellowknife Bay (Gale crater) on Mars include mudstone sampled by the Curiosity rover. The samples, John Klein and Cumberland, contain detrital basaltic minerals, calciumExpand
Erosion rates at the Mars Exploration Rover landing sites and long‐term climate change on Mars
[1] Erosion rates derived from the Gusev cratered plains and the erosion of weak sulfates by saltating sand at Meridiani Planum are so slow that they argue that the present dry and desiccatingExpand
NEAR Infrared Spectrometer Photometry of Asteroid 433 Eros
Abstract We present near-infrared spectrometer (NIS) observations (0.8 to 2.4 μm) of the S-type asteroid 433 Eros obtained by the NEAR Shoemaker spacecraft and report results of our Hapke photometricExpand
Characteristics, distribution, origin, and significance of opaline silica observed by the Spirit rov
[1] The presence of outcrops and soil (regolith) rich in opaline silica (∼65–92 wt % SiO2) in association with volcanic materials adjacent to the “Home Plate” feature in Gusev crater is evidence forExpand
Imaging of Small-Scale Features on 433 Eros from NEAR: Evidence for a Complex Regolith
On 25 October 2000, the Near Earth Asteroid Rendevous (NEAR)–Shoemaker spacecraft executed a low-altitude flyover of asteroid 433 Eros, making it possible to image the surface at a resolution ofExpand
Physical properties of the Mars Exploration Rover landing sites as inferred from Mini‐TES–derived thermal inertia
[1] The Miniature Thermal Emission Spectrometer (Mini-TES) on board the two Mars Exploration Rovers provides the first opportunity to observe thermal properties from the Martian surface, relate theseExpand
Thermal infrared (8-13 μm) spectra of 29 asteroids: The Cornell Mid-Infrared Asteroid Spectroscopy (MIDAS) survey
Abstract We report the results of the Cornell Mid-IR Asteroid Spectroscopy (MIDAS) survey, a program of ground-based observations designed to characterize the 8–13 μm spectral properties of aExpand