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Lyrids:see meteor showermeteor shower,
increase in the number of meteors observed in a particular part of the sky. The trails of the meteors of a meteor shower all appear to be traceable back to a single point in the sky, known as the radiant point, or radiant.
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Lyrids(lÿ -ridz) (April Lyrids) A minor meteor shower, radiant: RA 272°, dec +32°, that maximizes on April 21. In the past it was much more active, the last great Lyrid shower occurring in 1803. Observations of Lyrids have been traced back 2500 years, Chinese observers describing a remarkable display in 15 bc. The associated meteoroid stream has the same orbit as comet Thatcher (1861 I). See also June Lyrids.
a meteor stream with the radiant in the constellation Lyra. The stream is observed about April 21 and is associated with comet 1861 I. Known for more than 2,500 years, it is sometimes observed in the form of abundant meteor showers. Since 1803 it has usually had few meteors, although in 1922 and 1958 significant short-term increases in the number of meteors were noted.