Tethys, a moon of Saturn, imaged by the Cassini-Huygens Mission. The canyons of Ithaca Chasma can just be made out at the top left of the image.

	이 파일은 NASA에서 제작하였으므로 퍼블릭 도메인입니다. NASA의 저작권 정책에 따르면 NASA의 자료는 명시하지 않는 이상 저작권의 보호를 받지 않습니다. (Template:PD-USGov, 또는 NASA 저작권 정책 문서, JPL 그림 사용 정책을 참고하세요.)
	주의사항: NASA의 로고, 휘장, 엠블럼을 사용할 자유는 미국의 법률에 의해 제한됩니다. 14 CFR 1221 NASA 웹사이트에는 많은 양의 소련/러시아 연방 우주국, 그리고 다른 나라 우주국들의 자료들이 있습니다. 이 자료들은 퍼블릭 도메인이 아닙니다. 허블 우주 망원경의 사진들은 STScI에서 직접 가져온 사진이 아니라면, 저작권의 보호를 받고 있을 수 있습니다. [1] SOHO (ESA & NASA)에서 만든 모든 사진들은 저작권이 있습니다. "영리적이면서 비교육용 목적"의 사용시에는 이용허락을 받아야 합니다. [2] Astronomy Picture of the Day (APOD) 웹사이트의 사진들은 저작권의 보호를 받고 있을 수 있습니다. [3]

Link to the external image:

http://photojournal.jpl.nasa.gov/catalog/PIA06140

Original caption released with the image:

Having passed closer to Tethys than the Voyager 2 spacecraft, Cassini has returned the best-ever natural color view of this icy Saturnian moon.

As seen here, the battered surface of Tethys (1,060 kilometers, or 659 miles across) has a neutral hue. The image here is a mosaic of two footprints. Three images taken in the red, green and blue filters were taken to form a natural color composite. The result reveals a world nearly saturated with craters - many small craters lie on top of older, larger ones, suggesting an ancient surface. At the top and along the boundary between day and night, the moon's terrain has a grooved appearance.

This moon is known to have a density very close to that of water, indicating it is likely composed mainly of water ice. Its frozen mysteries await Cassini's planned close flyby in September 2005.

The view shows primarily the trailing hemisphere of Tethys, which is the side opposite the moon's direction of motion in its orbit. The image has been rotated so that north on Tethys is up.

The images comprising this color view were taken with the Cassini spacecraft narrow angle camera on Oct. 28, 2004, at a distance of about 256,000 kilometers (159,000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 50 degrees. The image scale is 1.5 kilometers (0.9 miles) 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 Cassini-Huygens 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 team is based at the Space Science Institute, Boulder, Colo.

For more information about the Cassini-Huygens mission, visit http://saturn.jpl.nasa.gov and the Cassini imaging team home page, http://ciclops.org .

Image Credit: NASA/JPL/Space Science Institute