Credit & Copyright: P. Challis (CfA), 1.2-m Telescope, Whipple ObservatoryExplanation: This huge ball of stars predates our Sun. Long before mankind evolved, before dinosaurs roamed, and even before our Earth existed, ancient globs of stars condensed and orbited a young Milky Way Galaxy. Of the 250 or so globular clusters that survive today, M3 is one of the largest and brightest, easily visible in the Northern hemisphere with binoculars. M3 contains about half a million stars, most of which are old and red. The existence of young blue stars in M3 once posed a mystery, but these blue stragglers are now thought to form via stellar interactions.
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Based on Astronomy Picture Of the Day
Publications with keywords: M 3 - globular cluster
Publications with words: M 3 - globular cluster
- NGC 4372 and the Dark Doodad
- Millions of Stars in Omega Centauri
- APOD: 2023 February 20 Á NGC 1850: Not Found in the Milky Way
- APOD: 2023 January 30 Á Globular Star Cluster NGC 6355 from Hubble
- M13: The Great Globular Cluster in Hercules
- Globular Star Cluster 47 Tuc
- Comet Leonard Before Star Cluster M3