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Landsat: 5 decades of imagery and data

1 Oct 2021, 11:45 UTC
Landsat: 5 decades of imagery and data
(200 words excerpt, click title or image to see full post)

Lava burns a path through La Palma in Spain’s Canary Islands on September 26, 2021. This image, and the next 2 below, are Landsat images. Landsat’s eye from the sky witnesses history happening on Earth. The La Palma volcano erupted on September 19, 2021. The wall of molten rock rose as high as about 40 feet (12 meters) in some spots, covered 500 acres (200 hectares) of land, and destroyed over 500 structures. The lava finally burned a path to the sea on September 29. Image via Landsat/ NASA.
Landsat’s legacy
The latest in NASA’s series of Landsat satellites – Landsat 9 – launched this week, on September 27. It’ll continue what’s now a 50-year record of Landsat images and data, showing Earth changes, acquired from Earth-orbit. So far, there are 9 million space images of our home planet’s landscapes and coastlines in the Landsat series. All are free to scientists to analyze and understand. Landsat is NASA’s workhorse satellite series. Aloft since 1972, these satellites have provided the longest-running continuous record of what’s happening on Earth.
The Landsat series began on July 23, 1972, when NASA and the U.S. Geological Survey (USGS) launched the Earth Resources Technology Satellite ...

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