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100,000 Earth Photographs from the International Space Station
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Published February 9, 2004
This image of the El Paso-Juárez area on the U.S.-Mexico border is the 100,000th photograph of Earth that astronauts have taken from the International Space Station. It was taken on January 26, 2004, by Expedition 8 crewmembers. The Rio Grande can be seen meandering through the area, forming the boundary between the sister cities of El Paso, Texas and Juárez, Chihuahua. North is to the right in this image, and the setting sun has cast the east side of the Sierra Juárez and Franklin Mountains into shadow.
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Glacial Retreat in Argentina
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Published February 2, 2004
For the crew onboard the International Space Station daylight views of the Earth’s Southern Hemisphere offer fewer opportunities to observe and document land features with onboard cameras. However, South America’s Patagonian Ice Fields and glaciers in the far southern Andes mountains offer beautiful, dynamic features with frequent passes whenever weather conditions permit. On the afternoon of January 3, 2004, the crew took this view of the Upsala Glacier in Argentina. A worldwide retreat of glaciers was observed during the twentieth century and most of the Patagonia’s glaciers, including Upsala, were no exception.
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Five-Year-Old Icebergs near South Georgia Island
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Published January 26, 2004
These photographs, taken from the International Space Station in January, 2004, show two pieces of a massive iceberg that broke off from the Ronne Ice Shelf in October, 1998. The pieces of iceberg A-38 have floated relatively close to South Georgia Island. After 5 years and 3 months adrift, they are approximately 1,500 nautical miles from their origin. In the oblique image, taken a few minutes later, the cloud pattern reveals the impact of the mountainous islands on the local wind field. At this time, the icebergs are sheltered in the lee side of the island.
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Effect of Drought on Great Salt Lake
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Published January 19, 2004
Great Salt Lake serves as a striking visual marker for astronauts orbiting over North America. A sharp line across its center is caused by the restriction in water flow from the railroad causeway. The eye-catching colors of the lake stem from the fact that Great Salt Lake is hypersaline, typically 3–5 times saltier than the ocean, and the high salinities support sets of plants and animals that affect the light-absorbing qualities of the water. Space Station astronauts have recorded the decline in lake levels in response to a regional 5-year drought taking both detailed views and broad views of the entire lake. As lake levels have declined the salt works have become islands in the middle of a dry lakebed.
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Measuring Water Depth from the International Space Station
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Published January 12, 2004
Looking out the window of the International Space Station, astronauts often take the time to admire and photograph tropical islands and coral reefs. From an altitude of 400 kilometers and with only a digital camera as a tool, it seems impossible to make detailed measurements of the depth of underwater features. However, a new technique developed by NOAA scientists has done just that—plotted the depths of lagoon features at Pearl and Hermes Reef, northwest Hawaii, using digital astronaut photography from the International Space Station (ISS).
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Photographs of Auroras from Space
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Published January 5, 2004
If Iris, the goddess of the rainbow, had a sister she would be the goddess of Aurora. Glowing green ripples form arcs that constantly transform their shape into new glowing diaphanous forms. There is nothing static about auroras. They are always moving, always changing, and like snowflakes, each display is different from the last.
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