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Latest Abell 520 Stories

Hubble Sets Dark Matter Record Straight
2012-11-29 19:24:08

Lee Rannals for redOrbit.com — Your Universe Online A new observation of Abell 520 using the Hubble Space Telescope has helped astronomers determine that the core of the galaxy cluster is not over-dense in dark matter after all. Astronomers earlier this year spotted an overabundance of dark matter in the heart of the galaxy cluster. This observation was puzzling because dark matter and galaxies should be anchored together. Scientists have evidence that dark matter is...

Astronomers Discover New Galaxy Cluster - Musket Ball
2012-04-13 03:33:15

Using a combination of powerful observatories in space and on the ground, astronomers have observed a violent collision between two galaxy clusters in which so-called normal matter has been wrenched apart from dark matter through a violent collision between two galaxy clusters. The newly discovered galaxy cluster is called DLSCL J0916.2+2951. It is similar to the Bullet Cluster, the first system in which the separation of dark and normal matter was observed, but with some important...

2012-03-14 22:19:10

Two teams of astronomers have used data from NASA's Chandra X-ray Observatory and other telescopes to map the distribution of dark matter in a galaxy cluster known as Abell 383, which is located about 2.3 billion light years from Earth. Not only were the researchers able to find where the dark matter lies in the two dimensions across the sky, they were also able to determine how the dark matter is distributed along the line of sight. Dark matter is invisible material that does not emit...

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2007-08-16 12:20:00

Astronomers have discovered a chaotic scene unlike any witnessed before in a cosmic "train wreck" between giant galaxy clusters. NASA's Chandra X-ray Observatory and optical telescopes revealed a dark matter core that was mostly devoid of galaxies, which may pose problems for current theories of dark matter behavior. "These results challenge our understanding of the way clusters merge," said Dr. Andisheh Mahdavi of the University of Victoria, British Columbia. "Or, they possibly make us even...


Latest Abell 520 Reference Libraries

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2010-09-07 17:31:13

The Bullet Cluster is made up of two colliding clusters galaxies. According to a 2006 study, the Bullet Cluster also shows the best evidence for the existence of Dark Matter. From observations of galaxy cluster collisions it has been found that many show displacement between their center of visible matter and their gravitational potential. Each component, stars, gas, and dark matter, within a cluster pair behaves differently during a collision allowing for each to be studied separately....

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2010-09-07 17:03:18

The Abell 520 galaxy cluster is an strange structure formed by a major merger. Due to its odd and chaotic nature it has been given the nick-name the Train Wreck Cluster. The Dark Matter within the cluster does not act as expected like it does in other clusters, therefore, Abell 520 creates problems for many of the prevailing theories about Dark Matter. It also disrupts many alternative theories of modified gravity. Similar to the Bullet Cluster the gas contents and galaxies within the...

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Word of the Day
maffling
  • To stammer.
  • Present participle of maffle, to stammer.
  • A simpleton.
The word 'maffle' may come from a Dutch word meaning 'to move the jaws' or a French word meaning 'having large cheeks'.