(Latin: “Lion”) In astronomy, the constellation lying between Cancer and Virgo; in astrology, the fifth sign of the zodiac, governing approximately the period July 23–August 22. Its symbol, a lion, has been associated with the Nemean lion slain by Heracles. The Nemean lion was considered invulnerable because its skin was impervious to arrows, but Heracles battered it to death with a club. Zeus put the lion in the sky as a constellation.

This entry comes from Encyclopædia Britannica Concise.
For the full entry on Leo, visit Britannica.com.

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