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HubbleSite Megastar-Birth Cluster is Biggest, Brightest and Hottest Ever Seen

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Space Telescope Science

A mysterious arc of light found behind a distant cluster of galaxies has turned out to be the biggest, brightest, and hottest star-forming region ever seen in space. The so-called Lynx arc is 1 million times brighter than the well-known Orion Nebula, a nearby prototypical star-birth region visible with small telescopes. The newly identified super-cluster contains a million blue-white stars that are twice as hot as similar stars in our Milky Way galaxy. It is a rarely seen example of the early days of the universe where furious firestorms of star birth blazed across the skies. The spectacular cluster's opulence is dimmed when seen from Earth only because it is 12 billion light-years away.

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