09 Jul '11, 10pm

M’zab Valley, Algeria: Rising out of parched surroundings, the M’zab Valley is filled with palm groves and do...

Less than 5 percent of Algeria’s land surface is suitable for growing crops, and most precipitation falls on the Atlas Mountains along the coast. Inland, dust-laden winds blow over rocky plains and sand seas. However, in north central Algeria—off the tip of Grand Erg Occidental and about 450 kilometers (280 miles) south of Algiers—lies a serpentine stretch of vegetation. It is the M’zab Valley, filled with palm groves and dotted with centuries-old settlements. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite captured this image of M’zab Valley on February 9, 2011. ASTER combines infrared, red, and green wavelengths of light. Bare rock ranges in color from beige to peach. Buildings and paved surfaces appear gray. Vegetation is red, and brighter shades of red indicate more robust vegetation. This oasis results from water th...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=51296&s...

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NASA Earth Observato M’zab Valley, Algeria: Ris...

earthobservatory.nasa.gov 09 Jul '11, 10pm

Less than 5 percent of Algeria’s land surface is suitable for growing crops, and most precipitation falls on the Atlas Mou...

Farewell to Atlantis [image] #NASA

earthobservatory.nasa.gov 08 Jul '11, 10pm

At 11:29 a.m. Eastern Daylight Time on July 8, 2011, the Space Shuttle Atlantis lit its rockets and roared into space. Fou...