Landsat
Landsat is a series of Earth observation satellites operated by NASA and the United States Geological Survey.
The Landsat program is program is a system of satellites that take pictures of the surface of a planet.
Landsat imagery is free. It is paid for by American tax dollars.
A Landsat scene is a digital image of the earth as seen by one or another of the radiometers in the Landsat satellite in orbit.Each radiometer is sensitive to a different band of light (the most recent Landsat has 7 radiometers giving 7 bands).The scenes from the red, green, and blue radiometers can be overlayed to give a true-color image.The scenes from the various infrared radiometers can be substituted to give a false-color image, which can show useful information that is difficult to see in the true-color image.
William Donald Nixon has written: 'Landsat' -- subject(s): Landsat satellites
Landsat-7,can acquire detiled images by detecting light reflected off landforms on Earth.
The Landsat collects information about the surface and forms it into computer data for scientists to study.
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The program began in 1967.
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The power source for a Landsat satellite are four solar panels. Each solar panel was 2.3 meters by 1.5 meters.