Landsat: A guide to the Earth observation satellite fleet

Landsat is an eagled-eyed satellite fleet that's kept a watchful eye on Earth since 1972. According to NASA, it is the "longest continuous space-based record (opens in new tab) of Earth's land in existence." The program takes images of the Earth at a range that allows scientists to see large-scale changes in the landscape, including those changes induced by human-driven climate change. Landsat 9, the most recent of the series, launched in September 2021 and as late as 2019, researchers have said the program's consistent, multi-decadal record is a boon to science. More

(Source: Space.com - Jul 21)