NASA/ESA Hubble Space
Telescope can peer into an astronomical mystery in search of clues.
Unlike most globular
clusters, Ruprecht 106 may be what astronomers call a single population globular cluster.
While the majority of
stars in a globular cluster formed at approximately the same location and time,
It turns out that almost
all globular clusters contain at least two groups of stars with distinct chemical compositions.
Hubble captured this
star-studded image using one of its most versatile instruments, the Advanced Camera for Surveys (ACS).
Much like the stars in globular clusters
Hubble’s instruments also have distinct generations: ACS is a third-generation instrument which replaced the original Faint Object Camera in 2002.
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