19 Feb '12, 11pm

Lake Fitri, Chad [image] #NASA

Lake Fitri is an endorheic or “terminal” lake in the southern Sahara Desert. Deserts get so little rainfall that the rivers passing through them often cannot reach the sea, instead ending at depressions in the land surface where they form lakes. Astronauts on the International Space Station captured this photograph of the area in January 2012. (Note that the image is rotated so north is to the lower left.) Muddy, yellow-brown water marks the center of the basin, with a ring of dark brown muds and burnt vegetation on the exposed lake floor to the north (lower left). The shoreline supports a thin line of reeds and floating grass vegetation, which appears as dark green in the image. The usually dry Wadi Batha empties into Lake Fitri from the east (image top). Over time, water flow in Wadi Batha has created a large delta, which occupies the entire top left third of the image (...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=77197&s...

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#SatelliteImagery Lake Fitri, Chad @NASA_EO

earthobservatory.nasa.gov 19 Feb '12, 11pm

Lake Fitri is an endorheic or “terminal” lake in the southern Sahara Desert. Deserts get so little rainfall that the river...

Lake Fitri, Chad: In the desert, a lake shows a...

earthobservatory.nasa.gov 19 Feb '12, 11pm

Lake Fitri is an endorheic or “terminal” lake in the southern Sahara Desert. Deserts get so little rainfall that the river...

Guam [image] #NASA

earthobservatory.nasa.gov 18 Feb '12, 11pm

Guam has two seasons: wet (June to December) and dry (January to June), and ALI acquired this image during the transition ...

What did John Glenn see? [image] #NASA

earthobservatory.nasa.gov 20 Feb '12, 11pm

Fifty years ago, on February 20, 1962, John Glenn became the first American to orbit the Earth. He also was one of the fir...

Steam and Ash Plume over Tinakula Island : Imag...

earthobservatory.nasa.gov 18 Feb '12, 8pm

Tinakula is a small, volcanic island in the South Pacific, located about 2,300 kilometers (1,400 miles) northeast of Brisb...

Ice Cover on Lake Sakakawea, North Dakota [imag...

earthobservatory.nasa.gov 26 Feb '12, 11pm

This photograph taken by an astronaut on the International Space Station illustrates the harsh winter conditions frequentl...

The Aral Sea, Before the Streams Ran Dry [image] #NASA

The Aral Sea, Before the Streams Ran Dry [image...

earthobservatory.nasa.gov 23 Feb '12, 11pm

It was once the fourth largest lake in the world. Fed primarily by snowmelt and precipitation from faraway mountains, the ...

NASA Earth Observato Ice Cover on Lake Sakakawe...

earthobservatory.nasa.gov 26 Feb '12, 11pm

This photograph taken by an astronaut on the International Space Station illustrates the harsh winter conditions frequentl...

Mackenzie Bay, Antarctica [image] #NASA

earthobservatory.nasa.gov 22 Feb '12, 11pm

Off the northeastern edge of Antarctica’sAmery Ice Shelf lies Mackenzie Bay, which was painted with a ghostly blue-green m...

Iceberg shards & ghostly tendrils stream from a...

earthobservatory.nasa.gov 23 Feb '12, 2am

Off the northeastern edge of Antarctica’s Amery Ice Shelf lies Mackenzie Bay, which was painted with a ghostly blue-green ...

Ice Cover on Lake Sakakawea, North Dakota

earthobservatory.nasa.gov 26 Feb '12, 11pm

This photograph taken by an astronaut on the International Space Station illustrates the harsh winter conditions frequentl...

Snow and Volcanoes on Kamchatka : Image of the ...

earthobservatory.nasa.gov 26 Feb '12, 9am

Besides bordering the Pacific Ocean, the east coast of Eurasia and the west coast of the Americas have something in common...