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Rosario, Argentina
Published November 7, 2005
The Paraná River, in the center of the view, has been the principal transportation artery of central South America since the times of early colonization. Consequently, the river gave rise to the growth of port cities such as Argentina’s second city, Rosario (bottom center), now a major industrial center (pop. > 1.1 million). Rosario is the center of a vibrant local agricultural economy—intensive agriculture is visible on the left margin of the view. As such, Rosario is one of the key cities in South America’s MERCOSUR common market (Argentina, Brazil, Paraguay, Uruguay). Other cities have expanded along the river bank, especially northward (for example, Capitan Bermudez, top left).
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Lake Nasser, Egypt
Published November 3, 2005
One of the world’s largest artificial lakes, Lake Nasser is named after the Egyptian President Gamal Abdul Nasser, who is largely responsible for the lake’s creation. President Nasser decided to build the Aswan High Dam across the Nile, forming a lake approximately 550 kilometers (340 miles) long.
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Navajo Mountain, Utah
Published October 31, 2005
The Colorado Plateau of Arizona, Colorado, New Mexico, and Utah is made of mostly flat-lying layers of sedimentary rock that record paleoclimate extremes ranging from oceans to widespread deserts over the last 1.8 billion years. Navajo Mountain in southeastern Utah is a dome-shaped chunk of igneous rock that intruded into the sedimentary layers and lifted up the overlying layer. Navajo Mountain is one of several of these rock formations, called laccolith by geologists, in southeastern Utah’s portion of the Plateau. This oblique (from-the-side) astronaut photograph highlights Navajo Mountain in the center of the image, surrounded by light red-brown Navajo Sandstone (also visible in the canyon at bottom of the image). The igneous rock at the core of the mountain is wrapped in sedimentary layers. The peak of Navajo Mountain, at approximately 3,148 meters (10,388 feet) elevation, is comprised of uplifted Dakota Sandstone deposited during the Cretaceous Period (approximately 66-138 million years ago).
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Fall Colors in the Wasatch Range, Utah
Published October 24, 2005
The Wasatch Range forms an impressive backdrop to the Salt Lake City metropolitan area, and it is a frequent destination for hikers, backpackers, and skiers. The range is considered to be the westernmost part of the Rocky Mountains, and rises to elevations of approximately 3,600 meters (12,000 feet) above sea level.
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Provincetown Spit, Cape Cod, Massachusetts
Published October 19, 2005
This astronaut photograph, taken from the International Space Station, shows the northernmost parts of the Cape Cod National Seashore, also known as Provincetown Spit.
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South Georgia Island
Published October 17, 2005
There is no permanent human base on South Georgia Island, a British territory in the South Atlantic Ocean that lies 1,300 kilometers east of the Falkland Islands. The crew of the International Space Station captured this image of the rugged and isolated landscape of the northern shore of the island. The first recorded explorer to land on the island was Captain James Cook aboard the HMS Resolution in 1775. He mapped part of the coastline, but was discouraged by the thick ice cover, lack of vegetation, and steep mountains. Mt. Paget, the highest peak, rises to 2,934 meters (9,625 feet) above sea level, and the island supports 161 glaciers. Cook named the southernmost point of the island “Cape Disappointment” when he realized he had not reached Antarctica.
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North Antelope Rochelle Coal Mine, Wyoming
Published October 10, 2005
The United States’ highest rate of coal production is in Wyoming, with almost 4 million short tons extracted in 2004. The majority of this coal is burned to generate electrical power within the United States, but a small percentage is also goes to Spain and Canada. The Powder River Basin in the northeastern portion of the state is the most productive of Wyoming’s coal fields. The extensive coal deposits—ranging in thickness from 21 to 53 meters (70 to 175 feet)—formed over 38-66 million years ago. The source of organic material for the coal originated in swamps, estuaries, and deltas associated with the regression (retreat) of a large inland seaway that occupied central North America during the Cretaceous Period, which spanned the years between about 144 to 65 million years ago.
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Dune Patterns, Namib Desert, Namibia
Published October 3, 2005
This detailed view of the remote Conception Bay sector of the Namibian coastline shows breakers and a strand plain on the left and complex dunes of the Namib dune sea on the right. A strand plain is a series of dunes, usually associated with and parallel to a beach, sometimes containing small creeks or lakes. The complexity and regularity of dune patterns in the dune sea of the Namib Desert have attracted the attention of geologists for decades; however, they remain poorly understood. The flat strand plain (roughly 4 kilometers shown here) shows a series of wet zones that appear black where seawater seeps inland and evaporates. These patches are aligned with the persistent southerly winds, some of the strongest of any coastal desert.
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Hurricane Damage in Biloxi, Mississippi
Published September 19, 2005
The port town of Biloxi, Mississippi, experienced significant damage when Hurricane Katrina came ashore on August 29, 2005. This astronaut photograph illustrates damage and flooding in the Biloxi area caused by Hurricane Katrina.
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Yellowstone Lake, Wyoming
Published September 5, 2005
This astronaut photograph is centered on Yellowstone Lake, a popular camping and fishing location within the National Park. The lake basin includes part of the youngest caldera and has an area of 352 square kilometers (136 square miles).
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Buzzards Bay, Massachusetts
Published August 29, 2005
The modern Buzzards Bay is approximately 45 kilometers long by 12 kilometers wide and is a popular destination for fishing, boating, and tourism. The Cape Cod Canal allows for passage between Buzzards Bay and Cape Cod Bay to the northeast; the wakes of numerous pleasure craft appear along the length of the Canal.
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Forest Fire Smoke Surrounding Mt. McKinley
Published August 22, 2005
This view of Mt McKinley (Denali)—the highest point in North America (6,194 meters; 20,230 feet)—looks as if it were taken from an aircraft. In fact, an astronaut onboard the International Space Station took advantage of cloud-free skies and a powerful 800-millimeter lens to photograph this peak while the spacecraft was over the Gulf of Alaska, 800 miles to the south of the mountain. The powerful lenses are difficult to use, requiring motion compensation by the astronaut, so these kinds of detailed images of horizon detail are seldom taken. The rising sun casts long shadows across the Kahiltna Glacier that angles down from Denali (left).
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