Space

APOD: 2026 November 1 – Colors of the Moon

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 01/11/2026, 04:50:24 UTC.

Briefings

The APOD article explains that the Moon's color varies based on atmospheric conditions and viewing location. It features a photograph from 2018 showing a total lunar eclipse where the Moon appeared faint red due to light refracted through Earth's atmosphere. The image documents apparent colors of the full moon taken over 10 years by an astrophotographer across Italy, illustrating how atmospheric scattering affects the Moon's appearance.

Key points

• The Moon appears brown-tinged gray outside Earth's atmosphere because it reflects sunlight rather than emitting its own light.
• A total lunar eclipse in July 2018 caused the Moon to appear faint red as sunlight refracted through Earth's atmosphere.

Context

This APOD explains how atmospheric conditions and viewing location influence the Moon's color, featuring a 2018 eclipse image from an Italian astrophotographer documenting over 10 years of observations.

Limitations

The article relies on a single photograph from one location; atmospheric effects vary by time of day, horizon position, and dust content. The specific cause of the purple hue in the 2018 image remains unclear, and the 10-year dataset is limited to Italy.

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