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Massive Galaxy Cluster MACS J0717 Tie
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Massive Galaxy Cluster MACS J0717 Tie
The repeated collisions in MACS J0717 are caused by a 13-million-light-year-long stream of galaxies, gas, and dark matter — known as a filament — pouring into a region already full of matter. A collision between the gas in two or more clusters causes the hot gas to slow down. However, the massive and compact galaxies do not slow down as much as the gas does, and so move ahead of it. Therefore, the speed and direction of each cluster's motion — perpendicular to the line of sight — can be estimated by studying the offset between the average position of the galaxies and the peak in the hot gas.
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5 out of 5 stars rating
By Libby L.14 July 2017 • Verified Purchase
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Product was of good quality. The fabric is excellent
5 out of 5 stars rating
By Janette C.28 February 2016 • Verified Purchase
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Beautiful material, and finish.
Smart tie for a special birthday, my Dads 80th.
Will look smashing with a nice suit. Printing excellent nice and clear.
5 out of 5 stars rating
By Libby L.14 July 2017 • Verified Purchase
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Zazzle Reviewer Program
Item is of very good quality. The fabric is excellent
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Product ID: 151532348183156626
Posted on 8/10/2011, 7:47 AM
Rating: G
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