Let the bright star Vega guide you to a famous star pattern in Hercules - called the Keystone - and then to the Hercules cluster, aka M13.The post Find the Keystone in Hercules, and the Hercules Cluster M13 first appeared on EarthSky.
Let the bright star Vega guide you to a famous star pattern in Hercules - called the Keystone - and then to the Hercules cluster, aka M13.The post Find the Keystone in Hercules, and the Hercules Cluster M13 first appeared on EarthSky.
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