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Posted by on Dec 27, 2012 in Science, Technology |

Landsat 5: the oldest observation satellite will say goodbye after 30 years

Landsat 5: the oldest observation satellite will say goodbye after 30 years

This was announced by the U.S. Geological Survey. Landsat 5 for Earth observation which has been running since 1984, the oldest active, shall terminate and cease to function after a crash repair impossible.

The Landsat program is made up of a series of U.S. satellites placed in sun-synchronous circular orbit to observe the Earth’s surface. The program began on July 23, 1972 with 1 and in its history has seven satellites in orbit. The satellite orbit is designed so that each time they do cross the Ecuador from north to south, between 10:00 and 10:15 am local time, satellites equipped with specific instruments for remote sensing multispectral .

If we speak of Landsat 5 satellite designed for a three-year career has finally orbited the Earth about 150,000 times and has passed 2.5 million images in almost three decades, becoming the more earth observation satellite old. As explained in the announcement of the end of its functions Marcia McNutt, director of the USGS:

Any major event since 1984 that left an imprint on the earth larger than a football field probably was recorded by the Landsat 5, if it was a hurricane, tsunami, wildfire, deforestation or an oil spill.

Landsat 5 also failed in the past, sometimes even out of service temporarily while stabilized. Finally and according to the USGS, the gyroscope Landsat 5 broke a few days ago to be beyond repair, which is why it will withdraw its services in the coming months.

Google Video is a sample of the work of these 30 years. Many of the images of the earth with which the whole world has enjoyed were made possible by Landsat 5. Now, after almost 30 years in operation, fail to notice the planet.

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