The GeoChristian

The Earth. Christianity. They go together.

Martian barchans

Is Ansel Adams still alive and in orbit around Mars?

From Astronomy Picture of the Day, April 22, 2012: Flowing Barchan Sand Dunes on Mars.

Credit: NASA

Barchans are crescent-shaped sand dunes, with two horns that point downwind. They form in areas of limited sand supply; on this image you can see that the dunes occupy less than ten percent of the plain. And they are very photogenic.

Grace and Peace

May 7, 2012 - Posted by | Art, Geology, Planetary Geology | ,

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