Night Sky: The Globular Clusters are Coming and Other Highlights for May

Wikipedia defines a globular cluster as “a spherical collection of stars that orbit a galactic core, as a satellite.”  Globular clusters are fairly common, and there about 150 globular clusters in the Milky Way. This is Messier 3, a +6.19 magnitude globular cluster that is 33 thousand light years away. M3 was discovered by Charles […]

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