File:PIA07763 Rhea full globe5.jpg

原始文件 (4,920 × 4,920像素,文件大小:2.67 MB,MIME类型:image/jpeg


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English: This giant mosaic reveals Saturn's icy moon Rhea in her full, crater-scarred glory.

This view consists of 21 clear-filter images and is centered at 0.4 degrees south latitude, 171 degrees west longitude.

The giant impact basin Tirawa is seen above and to the right of center. Tirawa, and the even larger basin Mamaldi to its southwest, are both covered in impact craters, indicating they are quite ancient.

The bright, approximately 40-kilometer-wide (25-mile) ray crater seen in many Cassini views of Rhea is located on the right side of this mosaic (at 12 degrees south latitude, 111 degrees west longitude). See PIA07764 for a close-up view of the eastern portion of the bright, ray crater.

There are few signs of tectonic activity in this view. However, the wispy streaks on Rhea that were seen at lower resolution by NASA's Voyager and Cassini spacecraft, were beyond the western (left) limb from this perspective. In high-resolution Cassini flyby images of Dione, similar features were identified as fractures caused by extensive tectonism.

Rhea is Saturn's second-largest moon, at 1,528 kilometers (949 miles) across.

The images in this mosaic were taken with the Cassini spacecraft narrow-angle camera during a close flyby on Nov. 26, 2005. The images were acquired as Cassini approached the moon at distances ranging from 79,190 to 58,686 kilometers (49,206 to 36,466 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of about 19 degrees. Image scale in the mosaic is 354 meters (1,161 feet) per pixel.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.

For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov. The Cassini imaging team homepage is at http://ciclops.org.

The NASA image has been processed to enhance contrast and had black panels added to its borders.
日期
来源 http://photojournal.jpl.nasa.gov/catalog/PIA07763
作者 NASA/JPL/Space Science Institute
其他版本
本图像或视频收录于美国国家航空航天局 (NASA)喷气推进实验室(Jet Propulsion Laboratory),其照片编号是: PIA07763

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当前2018年8月27日 (一) 07:152018年8月27日 (一) 07:15版本的缩略图4,920 × 4,920(2.67 MB)PlanetUserReverted to version as of 08:13, 13 March 2015 (UTC)
2018年8月15日 (三) 10:092018年8月15日 (三) 10:09版本的缩略图4,920 × 4,920(2.66 MB)The NMI UserReverted to version as of 23:49, 14 August 2018 (UTC)
2018年8月14日 (二) 23:592018年8月14日 (二) 23:59版本的缩略图4,920 × 4,920(2.64 MB)The NMI Userrv, fixed
2018年8月14日 (二) 23:492018年8月14日 (二) 23:49版本的缩略图4,920 × 4,920(2.66 MB)The NMI UserTry making black
2018年8月14日 (二) 23:442018年8月14日 (二) 23:44版本的缩略图4,920 × 4,920(2.65 MB)The NMI UserFixed
2018年8月13日 (一) 08:092018年8月13日 (一) 08:09版本的缩略图4,920 × 4,920(3.67 MB)The NMI UserRemoving black borders
2018年8月13日 (一) 08:012018年8月13日 (一) 08:01版本的缩略图4,920 × 4,920(2.67 MB)The NMI UserReverted to version as of 08:13, 13 March 2015 (UTC)
2018年8月13日 (一) 07:562018年8月13日 (一) 07:56版本的缩略图4,920 × 4,920(5.67 MB)The NMI UserBlack background
2015年3月13日 (五) 08:132015年3月13日 (五) 08:13版本的缩略图4,920 × 4,920(2.67 MB)MoreTomorrowmaking square (to match other planet/moon images)
2008年10月30日 (四) 06:432008年10月30日 (四) 06:43版本的缩略图4,920 × 4,820(2.68 MB)WolfmanSFThis is the same full-resolution NASA image, with black panels added to the margins and some Photoshop processing to enhance contrast.
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