منابع مشابه
H2O at the Phoenix landing site.
The Phoenix mission investigated patterned ground and weather in the northern arctic region of Mars for 5 months starting 25 May 2008 (solar longitude between 76.5 degrees and 148 degrees ). A shallow ice table was uncovered by the robotic arm in the center and edge of a nearby polygon at depths of 5 to 18 centimeters. In late summer, snowfall and frost blanketed the surface at night; H(2)O ice...
متن کاملEvidence for calcium carbonate at the Mars Phoenix landing site.
Carbonates are generally products of aqueous processes and may hold important clues about the history of liquid water on the surface of Mars. Calcium carbonate (approximately 3 to 5 weight percent) has been identified in the soils around the Phoenix landing site by scanning calorimetry showing an endothermic transition beginning around 725 degrees C accompanied by evolution of carbon dioxide an...
متن کاملAnalyzing Hydrated Salt Solutions at the Phoenix Landing Site
Introduction: In 2008, NASA’s Phoenix lander arrived in the northern arctic plain of Mars. Its objective was to perform analyses on the subsurface water ice, ultimately characterizing the geology, climate, and habitability of the Martian polar regions. Two of the instruments on board were TECP (Thermal Electric Conductivity Probe), which recorded temperature and relative humidity measurements, ...
متن کاملHabitability of the Phoenix landing site
[1] The Phoenix mission’s key objective was to search for a habitable zone. Mission results are used to evaluate habitability where Phoenix landed. A habitability probability (HI) is defined as the product of probabilities for the presence of liquid water (Plw), energy (Pe), nutrients (Pch), and a benign environment (Pb). Observational evidence for the presence of liquid water (past or present)...
متن کاملThe Habitability of the Phoenix Landing Site: a Comparative Assessment
Archer, Jr., D. Catling, B. Clark, J. Marshall, P. Smith, S. Young, and the Phoenix Science Team NASA Ames Research Center, Moffett Field, CA 94035, [email protected], 2 Lunar and Planetary Laboratory, University of Arizona, Tucson;University of Washington, Seattle,WA 98195; 4 Space science Inst. Boulder CO 80301, 5SETI Institute, Mountain View CA 94043, Tufts University, Department of Chem...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 2010
ISSN: 0148-0227
DOI: 10.1029/2009je003411