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The Landsat program is the longest-running enterprise for acquisition of satellite imagery of Earth. It is a joint NASA / USGS program. On 23 July 1972, the Earth Resources Technology Satellite was launched.
The picture is a satellite image of irrigated crops and Kahov irrigation canal. It was captured on 7 August 2015 by Landsat 8 (OLI). The image is created as a True Color Composite, where R – Red Band (0.64 - 0.67 μm), G – Green Band (0.53 - 0.59 μm) and B – Blue Band (0.45 - 0.51 μm). This band combination is suitable for crop monitoring.
In 1977, the first real time satellite imagery was acquired by the United States' KH-11 satellite system. The most recent Landsat satellite, Landsat 9, was launched on 27 September 2021. [4] The first television image of Earth from space transmitted by the TIROS-1 weather satellite in 1960.
NASA's Landsat satellites have consistently made history in Earth observation since the project's first launch in 1972, with this year marking 50 years of innovation and science. Its influence may ...
Landsat 9 will replace an older satellite to monitor Earth's environment – documenting everything from crops to deforestation to sea level rise.
The satellite weighs 1973 kg, is 4.04 m long, and 2.74 m in diameter. Unlike its predecessors, Landsat 7 has a solid-state memory of 378 Gbits (roughly 100 images). The main instrument on board Landsat 7 is the Enhanced Thematic Mapper Plus (ETM+), a whisk broom scanner image sensor.
But on Oct. 10, the U.S. Geological Survey's Landsat 8 satellite, which NASA helped to develop, managed to capture an image of the phenomenon, which is actually fog caused by rising steam.
Landsat-7: Active NASA and USGS 1999 Images Earth's land surfaces and coastal areas with global coverage at high spatial resolution. [19] Landsat-8: Active NASA and USGS 2013 Follow on to Landsat-7 with improved imager OLI and thermal sensor TIRS. Landsat-9: Active NASA and USGS 2021 Follow on to Landsat-8 with OLI sensor and thermal sensor TIRS-2.