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[edit] 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.
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Source |
http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=16963
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Date |
not specified
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Author |
NASA/JPL Imaging Radar team.
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Permission |
Public domain
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Other versions |
Larger, uncropped, unannotated version available at source URL. |
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