How to Use Hercules 'Keystone' to Find 'Million Star' Cluster | June 2014 Skywatching Video
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Description
A lopsided square of 4 stars called the 'Keystone', found in he Hercules Constellation, points the way to the Hercules Cluster (M31). Draco (the Dragon) and Boötes (the Herdsman) also highlight June's skywatching.
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