A habitable fluvio-lacustrine environment at Yellowknife Bay, Gale crater, Mars.
نویسندگان
چکیده
The Curiosity rover discovered fine-grained sedimentary rocks, which are inferred to represent an ancient lake and preserve evidence of an environment that would have been suited to support a martian biosphere founded on chemolithoautotrophy. This aqueous environment was characterized by neutral pH, low salinity, and variable redox states of both iron and sulfur species. Carbon, hydrogen, oxygen, sulfur, nitrogen, and phosphorus were measured directly as key biogenic elements; by inference, phosphorus is assumed to have been available. The environment probably had a minimum duration of hundreds to tens of thousands of years. These results highlight the biological viability of fluvial-lacustrine environments in the post-Noachian history of Mars.
منابع مشابه
Mars A Habitable Fluvio - Lacustrine Environment at Yellowknife Bay , Gale
, (2014); 343 Science et al. J. P. Grotzinger Crater, Mars A Habitable Fluvio-Lacustrine Environment at Yellowknife Bay, Gale This copy is for your personal, non-commercial use only. clicking here. colleagues, clients, or customers by , you can order high-quality copies for your If you wish to distribute this article to others here. following the guidelines can be obtained by Permission to rep...
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COVER Eroded landscape of Yellowknife Bay, Gale crater on Mars. Sheepbed mudstone is seen in the foreground, ~4 meters distant from the Curiosity rover camera that took the photo; Gillespie sandstone is in the middle fi eld. The foothills of Mt. Sharp (upper left), ~20 kilometers distant, are Curiosity’s ultimate destination. Exploration of this region by the Curiosity rover offers evidence of ...
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ورودعنوان ژورنال:
- Science
دوره 343 6169 شماره
صفحات -
تاریخ انتشار 2014