News tagged with galaxy cluster

Hubble sees 'ghost light' from dead galaxies

(Phys.org) —NASA's Hubble Space Telescope has picked up the faint, ghostly glow of stars ejected from ancient galaxies that were gravitationally ripped apart several billion years ago. The mayhem happened 4 billion light-years ...

dateOct 30, 2014 in Astronomy
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Dark matter is darker than once thought

This panel of images represents a study of 72 colliding galaxy clusters conducted by a team of astronomers using NASA's Chandra X-ray Observatory and Hubble Space Telescope. The research sets new limits on how dark matter ...

dateMar 27, 2015 in
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Mysterious X-ray signal intrigues astronomers

(Phys.org) —A mysterious X-ray signal has been found in a detailed study of galaxy clusters using NASA's Chandra X-ray Observatory and ESA's XMM-Newton. One intriguing possibility is that the X-rays are produced by the ...

dateJun 24, 2014 in Astronomy
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Why does the Milky Way rotate?

We live in a galaxy that is called the Milky Way. It's called a barred spiral galaxy, which means that it has a spiral shape with a bar of stars across its middle. The galaxy is rather huge—at least 100,000 light-years ...

dateFeb 11, 2015 in Astronomy
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Astronomers create first realistic virtual universe

(Phys.org) —Move over, Matrix - astronomers have done you one better. They have created the first realistic virtual universe using a computer simulation called "Illustris." Illustris can recreate 13 billion years of cosmic ...

dateMay 07, 2014 in Astronomy
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