File:PIA18594-Mars-UprightBoulder-20140703.jpg
原始文件 (2,311 × 1,486像素,文件大小:2 MB,MIME类型:image/jpeg)
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描述PIA18594-Mars-UprightBoulder-20140703.jpg |
English: An Irregular, Upright Boulder on Mars
August 13, 2014 http://www.nasa.gov/jpl/mro/pia18594/ A path resembling a dotted line from the upper left to middle right of this image is the track left by an irregularly shaped, oblong boulder as it tumbled down a slope on Mars before coming to rest in an upright attitude at the downhill end of the track. The High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter recorded this view on July 3, 2014. The boulder's trail down the slope is about one-third of a mile (about 500 meters) long. The trail has an odd repeating pattern, suggesting the boulder could not roll straight due to its shape. Calculated from the length of the shadow cast by the rock and the known angle of sunlight during this afternoon exposure, the height of the boulder is about 20 feet (6 meters). Its width as seen from overhead is only about 11.5 feet (3.5 meters), so it indeed has an irregular shape. It came to rest with its long axis pointed up. The location is in a region of Mars with steep slopes at 3.31 degrees south latitude, 302 degrees east longitude. The image is an excerpt from HiRISE observation ESP_037190_1765. Other image products from this observation are available at http://hirise.lpl.arizona.edu/ESP_037190_1765 . HiRISE is one of six instruments on NASA's Mars Reconnaissance Orbiter. The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colorado. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington. |
日期 | |
来源 | http://www.nasa.gov/sites/default/files/pia18594-full.jpg |
作者 | NASA/JPL-Caltech/Univ. of Arizona |
许可协议[编辑]
Public domainPublic domainfalsefalse |
本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zh、NASA版权方针页面或JPL图片使用方针。) | ||
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方位 | 标准 |
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水平分辨率 | 72 dpi |
垂直分辨率 | 72 dpi |
使用软件 | Adobe Photoshop CS3 Windows |
文件修改日期时间 | 2014年8月12日 (二) 16:49 |
色彩空间 | 无标定 |
图像宽度 | 2,311 px |
图像高度 | 1,486 px |
数字化日期时间 | 2014年8月12日 (二) 09:49 |
原始数据最后修改日期 | 2014年8月12日 (二) 09:49 |
IIM 版本 | 49,944 |