See All 26 Letters of the Alphabet From Space

A: Utah’s Green River doubling back on itself—a feature known as Bowknot Bend—photographed by an astronaut from the International Space Station on Jan. 22, 2014.

NASA

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B: The Operational Land Imager (OLI) on Landsat 8 acquired this image of the Arkansas River and the Holla Bend Wildlife Refuge on Aug. 4, 2014.

NASA Earth Observatory

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C: An artificial island at the southern end of Bahrain Island photographed by an astronaut on the International Space Station on Jan. 23, 2011.

NASA

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D: The Enhanced Thematic Mapper on Landsat 7 acquired this image of Akimiski Island in James Bay on Aug. 9, 2000.

NASA Earth Observatory/Jesse Allen/University of Maryland’s Global Land Cover Facility

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E: The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured this image of a phytoplankton bloom off the coast of New Zealand on Oct. 25, 2009.

NASA/Jeff Schmaltz/MODIS Rapid Response Team

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F: The Operational Land Imager (OLI) on Landsat 8 acquired this false-color image of valleys and snow-covered mountain ranges in southeastern Tibet on Aug. 4, 2014.

NASA

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G: This image of Pinaki Island was captured by astronauts on the International Space Station in April 2001.

NASA

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H: The Operational Land Imager on Landsat 8 acquired this image of rivers running through colorful ridges in southwestern Kyrgyzstan on Aug. 30, 2014.

NASA

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I: The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this image of the Andaman Islands on Feb. 10, 2007.

NASA/Jeff Schmaltz/MODIS Rapid Response Team/Goddard Space Flight Center

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J: The Operational Land Imager on Landsat 8 captured this image of the Trunk Reef near Townsville, Australia on July 17, 2015.

NASA Earth Observatory/Joshua Stevens/U.S. Geological Survey

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K: The Operational Land Imager (OLI) on Landsat 8 acquired this image of glaciers at the Sirmilik National Park Pond Inlet in Mittimatalik, Canada on Aug. 3, 2015.

NASA Earth Observatory/Jesse Allen/U.S. Geological Survey

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L: The Moderate Resolution Imaging Spectroradiometer (MODIS) on the Aqua satellite captured this image of snow across the northeastern United States on Oct. 30, 2008.

NASA

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M: The Operational Land Imager (OLI) on Landsat 8 captured this image of glaciers in the Tian Shan mountains in northeastern Kyrgyzstan on Aug. 14, 2015.

NASA

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N: The Moderate Resolution Imaging Spectroradiometer (MODIS) on the Terra satellite captured this image of ship tracks over the Pacific on March 4, 2009. Ship emissions contain small particles that cause the clouds to form.

NASA Earth Observatory/Jesse Allen

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O: The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on the Terra satellite captured this image of Tenoumer meteorite crater in Mauritania on Jan. 24, 2008.

NASA/GSFC/METI/ERSDAC/JAROS/ASTER Science Team/Jesse Allen

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P: The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) sensor on the Terra satellite captured this false-color image of the Mackenzie River Delta in Canada on Aug. 4, 2005.

NASA/GSFC/METI/ERSDAC/JAROS/ASTER Science Team

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Q: The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite acquired this image of Lonar Crater in India on Nov. 29, 2004.

NASA/GSFC/METI/ERSDAC/JAROS/ASTER Science Team/Jesse Allen

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R: The Operational Land Imager (OLI) on Landsat 8 captured this image of Lago Menendez in Argentina on Jan. 20, 2015.

NASA

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S: The Moderate Resolution Imaging Spectroradiometer (MODIS) on the Terra satellite acquired this image of clouds swirling over the Atlantic Ocean on April 29, 2009.

NASA/Jeff Schmaltz/MODIS Rapid Response System

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T: The Operational Land Imager (OLI) on Landsat 8 captured this image of development along two roads in the United Arab Emirates on March 9, 2015.

NASA Earth Observatory/Jesse Allen/U.S. Geological Survey

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U: The Ikonos satellite captured this image of Gooseneck State Park in Utah on May 9, 2004.

DigitalGlobe/ScapeWare3d/Getty Images

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V: The Operational Land Imager (OLI) on Landsat 8 acquired this image of ash on the snow around Shiveluch—one of the largest and most active volcanoes on Russia’s Kamchatka Peninsula on March 23, 2015.

NASA Earth Observatory/Jesse Allen/U.S. Geological Survey

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W: The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this image of dust blowing over the Red Sea on Jan. 13, 2009.

NASA/GSFC/Jeff Schmaltz/MODIS Rapid Response Team

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X: The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite captured this false-color image of the northwest corner of Leidy Glacier in Greenland on Aug. 7, 2012.

NASA/GSFC/METI/ERSDAC/JAROS/ASTER Science Team/Jesse Allen

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Y: The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite captured this false-color image of the Ugab River in Namibia on Dec. 25, 2000.

NASA/GSFC/METI/ERSDAC/JAROS/U.S./Japan ASTER Science Team

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Z: The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured this image of wildfire smoke over Canada on July 11, 2012.

NASA/Schmaltz/LANCE MODIS Rapid Response

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