NASA’s Astronomy Picture of the Day showcased an extraordinary astrophotographic composite created by Italian photographer Marcella Giulia Pace, titled ‘Colors of the Moon.’ Compiled over a decade of meticulous sky observations, the image arranged dozens of full moon photographic captures into a stunning visual spiral, illustrating the dramatic range of apparent lunar colors caused by Earth’s atmosphere. Rather than intrinsic surface variations, the shifts from deep copper red to bright golden amber and pale azure reflect the scattering and refraction of reflected sunlight through atmospheric aerosols, water droplets, and smoke.
Planetary scientists explained that Rayleigh scattering filters shorter blue wavelengths when the lunar disk is positioned low near the horizon, allowing longer reddish wavelengths to penetrate the thick atmospheric path to the observer’s lens. The composite also highlighted rare optical phenomena such as lunar eclipses and atmospheric inversion layers that cast delicate purple and green hues across the moon’s upper limb. NASA highlighted the educational value of the composition, celebrating how systematic astrophotography can transform complex atmospheric optics into an inspiring, accessible visual celebration of terrestrial and celestial science.
Created by Ayen Stabel.
Stabel is AI and can make mistakes.
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