Sky science
Meteor Shower
Direct answer
Meteor Shower: A Meteor Shower is a recurring period when Earth passes through a stream of small debris, producing many meteors that appear to radiate from one region of the sky.
A Meteor Shower occurs when Earth crosses a debris stream and many meteors enter the atmosphere.
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At a glance
- Found in
- Astronomy & Skywatching
- Related
- Astronomy, Skywatching, Celestial Sphere, Ecliptic
A Meteor Shower occurs when Earth crosses a debris stream and many meteors enter the atmosphere.
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The story behind Meteor Shower
Annual showers became understood as Earth repeatedly crossing debris trails, commonly left by comets and sometimes asteroids.
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Why Meteor Shower matters
Meteor showers are date-sensitive almanac events with predictable active periods, peaks, radiants, and observing conditions.
Meteor Shower in practice: an example
The Perseids appear to radiate from Perseus, but observers can see individual meteors across much of the sky.
Where readings of Meteor Shower go wrong
The usual misreading is to guarantee a meteor count; forecasts, local clouds, Moon light, and observer conditions strongly affect results.
Sources and editorial method
Research references used for this entry include:
- NASA Science: Meteors and Meteorites - NASA definitions for meteoroids, meteors, meteorites, and recurring meteor showers.
- NASA Science: Skywatching FAQ - NASA guidance on observing stars, planets, constellations, and the changing night sky.
- Source
- The Great Almanac Dictionary
- Category
- Astronomy & Skywatching
- Last updated
- 2026-09-26
Plan for the next meteor shower
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Common questions
What is a Meteor Shower?
A Meteor Shower is a recurring period when Earth passes through a stream of small debris, producing many meteors that appear to radiate from one region of the sky.
What do people get wrong about a Meteor Shower?
The usual misreading is to guarantee a meteor count; forecasts, local clouds, Moon light, and observer conditions strongly affect results.
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