View your list of saved words. (You can log in using Facebook.)
Entry into Earth's atmosphere of multiple meteoroids (seemeteor), traveling in parallel paths, usually spread over several hours or days. Most meteor showers come from matter released during passage of a comet through the inner solar system, and they recur annually as Earth crosses the comet's orbital path. Meteor showers are usually named for a constellation (e.g., Leonid for Leo) or star in their direction of origin. Most showers are visible as a few dozen meteors per hour, but occasionally Earth crosses an especially dense concentration of meteoroids, as in the great Leonid meteor shower of 1833, in which hundreds of thousands of meteors were seen in one night all over North America.
This entry comes from Encyclopædia Britannica Concise. For the full entry on meteor shower, visit Britannica.com.
Seen & Heard
What made you look up meteor shower? Please tell us what you were reading, watching or discussing that led you here.