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Summary
Description |
Two images of the Safsaf Oasis in the Sahara. The top image (taken by the Landat Thematic Mapper) is the surface. The bottom (taken by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) on board the Space Shuttle Endeavour on April 16, 1994) is the rock layer underneath, revealing black channels cut by the meandering of an ancient river. |
Source |
http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=16963 |
Date |
not specified |
Author |
NASA/JPL Imaging Radar team. |
Permission ( Reusing this image) |
Public domain |
Other versions |
Larger, uncropped, unannotated version available at source URL. |
Licensing
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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).
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Warnings:
- Use of NASA logos, insignia and emblems are restricted per US law 14 CFR 1221.
- The NASA website hosts a large number of images from the Soviet/ Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
- Materials from the Hubble Space Telescope may be copyrighted if they do not explicitly come from the STScI.
- All materials created by the SOHO probe are copyrighted and require permission for commercial non-educational use.
- Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted.
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File history
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Date/Time |
Dimensions |
User |
Comment |
current |
15:55, 9 May 2006 |
540×588 (154 KB) |
Howcheng |
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File links
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