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> The Jewel Box star cluster

The Jewel Box star cluster

author: R.Gendler/Novapix

reference: a-aou47-55003

Image Size 300 DPI: 34 * 22 cm

NGC 4755 (Caldwell 94) is called the Jewel Box, based on John Herschel's comment in the 1830's that it looked like a superb piece of jewelry. There are about 50 stars in this cluster which formed some 14 million years ago. Most of the cluster members are blue giants which in a few million years will exhaust their hydrogen fuel and become red giants on their way to a cataclysmic end as supernovae. One red giant can already be seen at the center of the cluster.

Keywords for this photo:

2008 - ASTRONOMY - BLUE GIANT - CRUX - JEWEL BOX - NGC 4755 - OPEN CLUSTER - RED GIANT - RED SUPERGIANT - SOUTHERN HEMISPHERE - STAR - STAR CLUSTER - SUPERGIANT -