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Yellowknife Bay, Mars
Yellowknife Bay is a geologic formation in Gale Crater on the planet Mars. NASA's Mars Science Laboratory Rover, named ''Curiosity'', arrived at the low lying depression on December 17, 2012, 125 sols, or martian days, into its 668 sol planned mission on the planet. Primary mission goals of the Mars Science Laboratory were to assess the potential habitability of the planet and whether or not the Martian environment is, or has ever been, capable of supporting life.〔 The site was chosen after much study of the region by previous missions. The Mars Reconnaissance Orbiter observed morphological features created by the presence of liquid water, suggesting the presence of an ancient lake which could have sustained microbial life. The geologic depression takes its name from the city Yellowknife, capital of the Canadian Northwest Territories,〔 in honor of the 4 billion year old rock in the region surrounding the city, which matches the approximate age of the uncovered rock in Gale Crater.
==Gale Crater==
Yellowknife Bay is a 5-meter geologic depression located in the large impact crater known as Gale Crater. The Crater is located on Mars near the northwestern part of the Aeolis quadrangle just south of the planet's equator. The crater's central feature is a high mountain called Aeolis Mons, nicknamed Mount Sharp. Geologic units in the interior of the crater offer a wide range of relative ages of the impact and provide a detailed geologic history of activities within the crater.
Gale Crater is the landing site of the Mars Science Laboratory rover, which was launched from Cape Canaveral on November 26, 2011 and landed at the site designated Bradbury Landing on August 6, 2012.〔 The rover is equipped with a more advanced suite of instruments than has ever landed on an extraterrestrial planet, perfect for assessing the geology of the target regions. From its landing point, ''Curiosity'' drove half a kilometer northeast to the low lying depression. A flatter and more lightly colored region than the previous terrain, this region was designated Yellowknife Bay. A top mission priority for the Mars Science Laboratory team was to capture a 360-degree, color panoramic image of this region. This image was then to be used to select drilling locations of the rock samples, John Klein and Cumberland, taken from Yellowknife Bay.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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