"Our loyalties are to the species and the planet. We speak for Earth. Our obligation to survive and flourish is owed not just to ourselves, but also to that Cosmos, ancient and vast, from which we spring." - Carl Sagan
Earth from space: Mt. McKinley, Alaska
The Operational Land Imager on the Landsat 8 satellite captured this image of Denali, or Mt. McKinley, on June 16, 2013. The mountain, composed primarily of granite, is located in the heart of the Alaska Range and has two significant summits that rise above the Denali Fault. The South Peak is the taller of the two. As seen in the lower image, a number of glaciers slide from its slopes into surrounding valleys, including Ruth, Kahiltna, and Peters glaciers.
Image credit: NASA Earth Observatory image by Jesse Allen and Robert Simmon, using Landsat data from the U.S. Geological Survey