NASA Uses Moonlight to Improve Satellite Accuracy

NASA’s airborne Lunar Spectral Irradiance, or air-LUSI, flew aboard NASA’s ER-2 aircraft from March 12 to 16 to accurately measure the amount of light reflected off the Moon. Reflected moonlight is a steady source of light that researchers are taking advantage of to improve the accuracy and consistency of measurements among Earth-observing satellites.

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Shown is the air-LUSI telescope positioned to measure a simulated Moon in a laboratory for testing and calibration before and after the flight campaign.
Mission: 
Air-LUSI