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End of an Era: Landsat 7 Decommissioned After 25 Years of Earth Observation
After 25 years of capturing Earth's changing landscape, the Landsat 7 satellite received its final transmission from the U.S. Geological Survey and was officially decommissioned June 4, closing a remarkable chapter in space-based observation.
The images highlight the city, the surrounding desert landscape, and Lake Mead, using shortwave infrared (SWIR), near-infrared (NIR), and red bands to emphasize differences in vegetation, water, and urban growth. “The Landsat satellites have delivered over 50 years of extraordinary science data, economic value and national security benefits by informing decisions in every sector of the economy—from monitoring drought in the West to guiding disaster recovery,” said Sarah Ryker, USGS Acting Director. Its Enhanced Thematic Mapper Plus sensor delivered improved high-resolution imagery that expanded its capabilities, capturing critical historical events such as the aftermath of 9/11, Hurricane Katrina, and the Deepwater Horizon oil spill.
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