Start Date: End Date: Published Date Data Date
The Alphabet from Orbit: Letter H
Published February 14, 2017
Rivers run through colorful ridges in southwestern Kyrgyzstan.
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The Alphabet from Orbit: Letter F
Published February 13, 2017
Landsat 8 acquired this false-color image of valleys and snow-covered mountain ranges in southeastern Tibet on August 4, 2014.
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The Alphabet from Orbit: Letter B
Published January 3, 2016
Holla Bend, a refuge along the Arkansas River, benefits bunches of babbling birds.
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Letter N for the New Year
Published December 31, 2015
Nimbus and nuclei and the near-infrared all bring us earth science joy.
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Letter Y: Ugab River, Namibia
Published December 26, 2015
What starts with Y? Yellowstone, the Yukon Delta, and the Yellow Sea.
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Letter K: Sirmilik National Park
Published December 24, 2015
Keen to see K from space? See what satellites have have kindly revealed.
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The Alphabet from Orbit: Letter J
Published December 23, 2015
J brings us joy when we view it from space.
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Greenland’s Leidy Glacier
Published January 22, 2015
Crisscrossing glaciers in northwest Greenland flow along the path of least resistance.
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Bowknot Bend
Published March 17, 2014
The Green River in eastern Utah once carved soft sediment into meanders on a floodplain. Then the land and mountains rose and the river dug deep, preserving those meanders in stone.
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Spring Bloom in New Zealand Waters
Published October 28, 2009
A phytoplankton bloom colored the waters east of New Zealand on October 25, 2009.
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Lonar Crater, India
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Published April 13, 2008
India’s Lonar Crater began causing confusion soon after it was identified. Lonar Crater sits inside the Deccan Plateau—a massive plain of volcanic basalt rock leftover from eruptions some 65 million years ago. Its location in this basalt field suggested to some geologists that it was a volcanic crater. Today, however, Lonar Crater is understood to result from a meteorite impact that occurred between 35,000 and 50,000 years ago.
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Tenoumer Crater, Mauritania
Published February 17, 2008
Deep in the Sahara Desert lies a crater. Nearly a perfect circle, it is 1.9 kilometers (1.2 miles) wide, and sports a rim 100 meters (330 feet) high. Modern geologists long debated what caused this crater, some of them favoring a volcano. But closer examination of the structure revealed that the crater’s hardened “lava” was actually rock that had melted from a meteorite impact.
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