acquired August 4, 2014

The Alphabet from Orbit: Letter F

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Big F, little f. What begins with F? Firn-filled fjords and frozen forms on folded, fossil-filled facies of rock! Fog, fossil fuels, and faults. France, Fort Collins, and don’t forget Fiji.

The Operational Land Imager (OLI) on Landsat 8 acquired this false-color image of valleys and snow-covered mountain ranges in southeastern Tibet on August 4, 2014. Firn is a granular type of snow often found on the surface of a glacier before it has been compressed into ice.

NASA Earth Observatory image using Landsat data from the U.S. Geological Survey. Caption by Adam Voiland.