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**Landsat continuity timeline.** The original slide's graphic was lost in PDF conversion. In short: the Landsat program has provided **continuous Earth imagery since 1972**, with at least one operational satellite at almost every moment. - Current operational pair: **Landsat 8 (2013)** + **Landsat 9 (2021)**. - Landsat Next is planned for launch ~2030 with **26 bands** at higher temporal cadence. - Reference: landsat.gsfc.nasa.gov.

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