Dictionary term
Gegenschein
Direct answer
Gegenschein: The Gegenschein is a very faint brightening of zodiacal light centered near the point opposite the Sun.
It is the counterglow of interplanetary dust.
It is the counterglow of interplanetary dust.
A scientific orientation to scale, light, or motion; the article supplies the precise definition.Quick reference
- Use when
- Observe only under exceptionally dark, transparent, moonless conditions.
- Do not use it for
- It is easily confused with airglow, Milky Way structure, or light pollution.
- Reference category
- Astronomy & Skywatching
- Related terms
- Skyglow, Zodiacal Light, Airglow, Dark Adaptation
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The story behind Gegenschein
Careful visual observers distinguished this oval glow from the broader zodiacal band.
Gegenschein in spiritual tradition
The faintest structures reward restraint in claiming a sighting.
Gegenschein: fact and faith, kept distinct
This is a factual astronomy reference. It can support wonder at the created order without becoming a claim of fate, worship, or private revelation.
Gegenschein in numerology
Gegenschein is not a numerology claim. Any numbers attached to it should retain their ordinary scientific, calendrical, navigational, or historical meaning unless a separate symbolic interpretation is clearly labeled.
Why Gegenschein matters
It reveals enhanced backscattering within the zodiacal dust cloud.
Gegenschein at work: an example
Near local midnight the antisolar point may carry a subtle diffuse patch.
Where interpretation stops
Gegenschein is presented as sourced astronomy, calendrical, Earth-science, cultural, or instrument-history reference. Definitions should distinguish measured phenomena from civil convention and historical interpretation, preserve location and time dependencies, and avoid turning factual sky data into a deterministic personal claim.
Sources and editorial method
Research references used for this entry include:
- NASA Science: Night Lights - NASA observing context for zodiacal light, airglow, aurora, and other dim night-sky light.
- NASA Science: Solar System Exploration - NASA overview of planets, moons, small bodies, rings, and the structure of the Solar System.
- Source
- The Great Almanac Dictionary
- Category
- Astronomy & Skywatching
- Also appears in
- Astronomy & Skywatching
- Aliases
- None listed
- Last updated
- 2026-07-16
Search for the midnight counterglow
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More in Astronomy & Skywatching
Common questions
What is Gegenschein?
The Gegenschein is a very faint brightening of zodiacal light centered near the point opposite the Sun.
How is Gegenschein used in an almanac?
Observe only under exceptionally dark, transparent, moonless conditions.
What should I avoid when interpreting Gegenschein?
It is easily confused with airglow, Milky Way structure, or light pollution.
