Messier 13
By McDonald Observatory
May 29, 2025
The star cluster Messier 13 is in Hercules, which is high in the east at nightfall. Under dark skies, the cluster is just visible to the unaided eye. It looks like a faint, fuzzy star. M13 is about 25,000 light-years away. It contains up to 500,000 stars.
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