Y. BELETSKY / EUROPEAN SOUTHERN OBSERVATORY / SCIENCE PHOTO LIBRARY Y. BELETSKY / EUROPEAN SOUTHERN OBSERVATORY / SCIENCE PHOTO LIBRARY
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Jewel Box star cluster (NGC 4755), optical image. This star cluster is around 6500 light years distant in the constellation of Crux. This grouping of stars is renowned for the contrast in colour between a red supergiant (upper centre), and the remaining bright stars which are blue/white supergiants. These massive stars are thought to be around 80,000 times more luminous than the Sun. This image was obtained by the FORS1 instrument on the European Southern Observatory (ESO) Very Large Telescope (VLT) at ESO's Paranal Observatory, Chile. Image published in 2009.
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