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Loading contentA lopsided quadrilateral forming the torso of Hercules; the great globular cluster M13 lies along its western side.
The constellation this pattern draws its stars from.
An asterism is a recognisable star pattern that is not one of the 88 official IAU constellations. Explore the 88 constellations →
Facts on this topic will be cited from these primary and reference sources.
General reference for the history of astronomy, biographies, and cultural context.