File:PIA18594-Mars-UprightBoulder-20140703.jpg
![File:PIA18594-Mars-UprightBoulder-20140703.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/PIA18594-Mars-UprightBoulder-20140703.jpg/800px-PIA18594-Mars-UprightBoulder-20140703.jpg?20140928192356)
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摘要
[編輯]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. |
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來源 | http://www.nasa.gov/sites/default/files/pia18594-full.jpg |
作者 | NASA/JPL-Caltech/Univ. of Arizona |
授權條款
[編輯]Public domainPublic domainfalsefalse |
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本作品由NASA創作,屬於公有領域。根據NASA的版權政策:“NASA的創作除非另有聲明否則不受版權保護。”(參見:Template:PD-USGov/zh,NASA版權政策或JPL圖像使用政策) | ![]() |
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目前 | 2014年9月28日 (日) 19:23 | ![]() | 2,311 × 1,486(2 MB) | Drbogdan(對話 | 貢獻) | User created page with UploadWizard |
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方位 | 標準 |
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水平解析度 | 72 dpi |
垂直解析度 | 72 dpi |
使用軟體 | Adobe Photoshop CS3 Windows |
檔案修改日期時間 | 2014年8月12日 (二) 16:49 |
色彩空間 | 顏色未校準 |
影像寬度 | 2,311 px |
影像高度 | 1,486 px |
數位化的日期時間 | 2014年8月12日 (二) 09:49 |
詮釋資料最後修改日期 | 2014年8月12日 (二) 09:49 |
IIM 版本 | 49,944 |