Image:PIA09102PIA09102 Liquid Lakes on Titan.jpg

From Wikipedia, the free encyclopedia

Image
File history
File links

Size of this preview: 458 × 599 pixel
Image in higher resolution (2600 × 3400 pixel, file size: 1.12 MB, MIME type: image/jpeg)

This is a featured picture, which means that members of the community have identified it as one of the finest images on the English Wikipedia, adding significantly to its accompanying article. If you have a different image of similar quality, be sure to upload it using the proper free license tag, add it to a relevant article, and nominate it.

This image was selected as picture of the day for May 6, 2007.

[edit] Summary

source: http://photojournal.jpl.nasa.gov/catalog/PIA09102 (Image credit: NASA/JPL/USGS )

Original Caption Released with Image:

The existence of oceans or lakes of liquid methane on Saturn's moon Titan was predicted more than 20 years ago. But with a dense haze preventing a closer look it has not been possible to confirm their presence. Until the Cassini flyby of July 22, 2006, that is.

Radar imaging data from the flyby, published this week in the journal Nature, provide convincing evidence for large bodies of liquid. This image, used on the journal's cover, gives a taste of what Cassini saw. Intensity in this colorized image is proportional to how much radar brightness is returned, or more specifically, the logarithm of the radar backscatter cross-section. The colors are not a representation of what the human eye would see.

The lakes, darker than the surrounding terrain, are emphasized here by tinting regions of low backscatter in blue. Radar-brighter regions are shown in tan. The strip of radar imagery is foreshortened to simulate an oblique view of the highest latitude region, seen from a point to its west.

This radar image was acquired by the Cassini radar instrument in synthetic aperture mode on July 22, 2006. The image is centered near 80 degrees north, 35 degrees west and is about 140 kilometers (84 miles) across. Smallest details in this image are about 500 meters (1,640 feet) across.

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 was designed, developed and assembled at JPL. The radar instrument was built by JPL and the Italian Space Agency, working with team members from the United States and several European countries.

For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov/home/index.cfm.

[edit] Licensing

This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy).

Warnings:

NASA logos (which include the current "meatball" logo, the old "worm" logo, and the seal) are copyrighted.
Materials from the Hubble Space Telescope may be copyrighted if they do not explicitly come from the STScI. [1]
All materials created by the SOHO probe are copyrighted and require permission for commercial non-educational use. [2]
Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3]

File history

Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version.
Click on date to download the file or see the image uploaded on that date.

(del) (cur) 21:06, 4 January 2007 . . Preetikapoor0 (Talk | contribs) . . 2600×3400 (1,176,845 bytes) (source: http://photojournal.jpl.nasa.gov/catalog/PIA09102 (Image credit: NASA/JPL/Space Science Institute) {{PD-USGov-NASA}})