The oldest of them is dated 1972 when Landsat-1 was launched. It can flaunt the biggest data collection so far (billions of historical satellite images). The Landsat program is the longest-ever mission that has been retrieving imagery from space for over 50 years by now.
Old Satellite Images: Timeline Of Earth Observation Missions The richest catalogs are often the most helpful, and EOSDA LandViewer offers historical aerial or satellite images from nearly a dozen sources. There are multiple sources with commercial historical images or granting access for free, with the downloading option or just for online view. Collections of historical satellite images allow comparing the present and the past to detect changes, make predictions, and mitigate losses.
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