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July 23, 2012 - Landsat Turns Forty

23 Jul 2012, 04:00 UTC
July 23, 2012 - Landsat Turns Forty
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The Week in SpaceJuly 23-29, 2012 Landsat Turns Forty In 1965, the U.S. Geological Survey proposed the idea of a remote sensing satellite program to gather facts about the natural resources of Earth. In 1970, NASA had permission to build Landsat 1, which was launched forty years ago this week. Since then, the Landsat series of satellites has collected millions of multi-spectral images that make it possible to study the long-term environmental effects of everything from natural coastal erosion to urban sprawl. The image above was taken by Landsat 7, the newest member of the Landsat family. It shows the delta of the Lena River, one of the largest rivers in the world. The Lena Delta Reserve is the most extensive protected wilderness area in Russia. It is an important refuge and breeding grounds for many species of Siberian wildlife. Image credit: USGS National Center for EROS and NASA Landsat Project Science Office Weekly CalendarJuly 23-29, 2012Holidays - Sky Events - Space History Monday 231972: Landsat 1 launched 1999: STS-93 Columbia launched, deploys Chandra X-Ray Observatory Tuesday 24Mars 4° north of Moon 1950: First rocket launched from Cape Canaveral1969: Apollo 11 crew returns to Earth1975: Apollo-Soyuz crew returns to Earth, ...

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