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Post Info TOPIC: MACS J0025.4-1222


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A spectacular intergalactic collision has revealed new clues about one of the mysteries of the universe, scientists say.
The blues and pinks of this 'giant cosmic car crash', as astronomers have dubbed it, provide fresh evidence for the existence of so-called dark matter.
The snapshot of galaxy clusters smashing into one another, captured with powerful telescopes, also gives new clues about the properties of this enigmatic substance.


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MACSJ0025.4-1222
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An international astronomy team that includes University of Hawaii astronomer Harald Ebeling has reported a powerful collision of galaxy clusters.
The "incredibly energetic collision" was captured with NASA's Chandra X-ray Observatory and Hubble Space Telescope, NASA officials announced last month.
Each of the two clusters that formed a new cluster was almost a million-billion times the mass of the sun and they merged at speeds of millions of miles per hour, NASA officials said. The hot gas in each cluster collided and slowed down but the dark matter did not, they said.
The new cluster, called MACSJ0025.4-1222, shows a clear separation between dark and ordinary matter, NASA officials reported.

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After two massive galaxy clusters collided, their gas slowed down but their dark matter continued on unimpeded

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A powerful collision of galaxy clusters has been captured by NASAs Hubble Space Telescope and Chandra X-ray Observatory. The observations of the cluster known as MACS J0025.4-1222 indicate that a titanic collision has separated the dark from ordinary matter and provide an independent confirmation of a similar effect detected previously in a target dubbed the Bullet Cluster. These new results show that the Bullet Cluster is not an anomalous case.

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Position(J2000):      RA 00h 25m 29.80s,  Dec -12° 22' 47.00"


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