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A Hubble Space Telescope image of NGC 6397, with a number of bright blue stragglers present
A Hubble Space Telescope image of NGC 6397, with a number of bright blue stragglers present
NGC 6752, a globular cluster that contains a high number of blue straggler stars
NGC 6752, a globular cluster that contains a high number of blue straggler stars
47 Tucanae contains at least 21 blue stragglers near its core.
47 Tucanae contains at least 21 blue stragglers near its core.
After Omega Centauri, 47 Tucanae is the brightest globular cluster in the night sky.
After Omega Centauri, 47 Tucanae is the brightest globular cluster in the night sky.
Multiple stellar populations in 47 Tucanae
Multiple stellar populations in 47 Tucanae