cluster

Comparison image: Hubble and HAWK-I explore a cluster with the mass of two quadrillion Suns
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Abell’s richest cluster
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The Universe contains some truly massive objects. Although we are still unsure how such gigantic things come to be, the current leading theory is known as hierarchical clustering, whereby small clumps of matter collide and merge to grow ever larger. The 14-billion-year history of the Universe has seen the formation of some enormous cosmic structures, […]

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The Toucan and the cluster
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It may be famous for hosting spectacular sights such as the Tucana Dwarf Galaxy and 47 Tucanae (heic1510), the second brightest globular cluster in the night sky, but the southern constellation of Tucana (The Toucan) also possesses a variety of unsung cosmic beauties. One such beauty is NGC 299, an open star cluster located within […]

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Unexpected Excess of Giant Planets in Star Cluster
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An international team of astronomers have found that there are far more planets of the hot Jupiter type than expected in a cluster of stars called Messier 67. This surprising result was obtained using a number of telescopes and instruments, among them the HARPS spectrograph at ESO’s La Silla Observatory in Chile. The denser environment […]

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Disco lights from a galaxy cluster
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In October of 2013 Hubble kicked off the Frontier Fields programme, a three-year series of observations aiming to produce the deepest ever views of the Universe. The project’s targets comprise six massive galaxy clusters, enormous collections of hundreds or even thousands of galaxies. These structures are the largest gravitationally-bound objects in the cosmos. One of […]

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Northwest Oklahoma shaken by earthquake cluster
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With an earthquake nearby registering a magnitude of 4.8, tied for the fourth highest in Oklahoma history, many in town are wondering if these new large quakes are the norm. "We just kind of adapt," said resident Ronda Stucks. "Okahomans are really …

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