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Latest Dark matter Stories

Black Hole Found At The Center Of A Shredded Galaxy
2012-02-15 13:40:43

Astronomers say they have found a black hole that was once at the core of a now-disintegrated dwarf galaxy. The researchers used NASA's Hubble Space Telescope to find a cluster of young, blue stars encircling the first intermediate-mass black hole ever discovered. "For the first time, we have evidence on the environment, and thus the origin, of this middle-weight black hole," Mathieu Servility, who worked at the Harvard-Smithsonian Center for Astrophysics when this research was...

Image 1 - Astronomers Find Link To Early Universe And Today's Massive Galaxies
2012-01-25 14:35:15

[ Video 1 ] | [ Video 2 ] Astronomers have found the strongest link ever between the most powerful bursts of star formation in the Universe, and the most massive galaxies found today. The galaxies saw the birth of new stars cut short, leaving them as massive galaxies of aging stars today, according to the new research. The astronomers also found that the emergence of supermassive black holes played a role in causing the sudden end to the starburst. Astronomers used the LABOCA...

Dwarf 'Satellite Galaxy' Detected 10 Billion Light Years Away
2012-01-18 14:48:08

An astronomer has discovered a faint "satellite galaxy" that is the lowest-mass object ever detected 10 billion light years away. Finding this dwarf galaxy at such a long distance away may be able to help astronomers find similar objects and confirm or reject theories about the structure of the universe. University of California physics professor Chris Fassnacht said in a statement that theory predicts that galaxies should be surrounded by halos of smaller, satellite blobs of mass....

Scientists Get Ready To Image A Black Hole
2012-01-18 10:02:35

Astronomers are building a virtual telescope as big as our planet that will capture the first ever picture outlining an enormous black hole within our galaxy. The Event Horizon Telescope will be powerful enough to see all the way to the center of the Milky Way, where the super massive black hole lives. Researchers believe by capturing an image of the black hole, it will allow astrophysicists to put Einstein´s General Theory of Relativity to the test. Scientists from related fields...

Galactic Brightness Helps Build Precision Model Of The Universe
2012-01-12 04:39:50

Berkeley Lab scientists and their Sloan Digital Sky Survey colleagues use galactic brightness to build a precision model of the cosmos Since 2000, the three Sloan Digital Sky Surveys (SDSS I, II, III) have surveyed well over a quarter of the night sky and produced the biggest color map of the universe in three dimensions ever. Now scientists at the U.S. Department of Energy´s Lawrence Berkeley National Laboratory (Berkeley Lab) and their SDSS colleagues, working with DOE´s...

When Galaxy Clusters Collide
2012-01-10 15:18:03

A UC Davis graduate student who is leading a study of the collision of galaxy clusters 5 billion light years away discussed the team´s findings today, Jan. 10, in a press briefing at the annual meeting of the American Astronomical Society in Austin, Texas. “A galaxy cluster is like a little universe, because it has the same matter composition as the whole universe,” said William Dawson, a Ph.D. candidate in physics. “By studying this little universe, we can learn...

Image 1 - El Gordo - Largest Galaxy Cluster In The Early Universe
2012-01-10 13:17:23

[ Watch Video 1 ] | [ Watch Video 2 ] An extremely hot, massive young galaxy cluster – the largest ever seen in the distant Universe – has been studied by an international team using ESO´s Very Large Telescope (VLT) in the Atacama Desert in Chile along with NASA's Chandra X-ray Observatory and the Atacama Cosmology Telescope. The new results are being announced on 10 January 2012 at the 219th meeting of the American Astronomical Society in Austin, Texas. The newly...


Latest Dark matter Reference Libraries

Cosmology
2014-01-12 00:00:00

Image Caption: The Hubble Extreme Deep Field (XDF) was completed in September 2012 and shows the farthest galaxies ever photographed by humans. Each speck of light in the photo is an individual galaxy, some of them as old as 13.2 billion years; the observable universe is estimated to contain more than 200 billion galaxies. Credit: NASA/Wikipedia What is Cosmology? I once commented to an acquaintance that I was fascinated by the field of Cosmology, and mused that if I had more time, I...

45_03c916cf051c1a581c0d52b3ccdd7561
2010-09-13 16:56:08

The Coma Cluster (Abell 1656), along with the Leo Cluster, is one of two major clusters compromising the Coma Supercluster. It contains over 1000 identified galaxies. Most of the galaxies in the center of the Coma Cluster are elliptical galaxies including both dwarf and giant. However the center is dominated by NGC 4874 and NGC 4889, two giant elliptical galaxies. The brightest galaxies are visible, a few degrees north of the galactic pole, with an amateur telescope larger than 20 cm. The...

45_ea0b4f3c063ef1aeec4ef6fed79a5d9d
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....

45_274ba7ddcce89663fc213d79e864e44b
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...

67_d2968798d508f86b18fbbe3396553cd4
2010-09-13 16:46:47

The cluster CL0024+17, located in Pisces, is a galaxy cluster that is allowing astronomers to probe the distribution of dark matter in space. Dark matter does not reflect light and therefore cannot be seen. It is only detectable by the way its gravity affects the lights around it. Using gravitational lensing astronomers observe the distorted light around the dark matter and are able to tell where it is located within a cluster. A dark matter ring found near the cluster's center, by...

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Word of the Day
bodacious
  • Remarkable; prodigious.
  • Audacious; gutsy.
  • Completely; extremely.
  • Audaciously; boldly.
  • Impressively great in size; enormous; extraordinary.
This word is probably from the dialectal 'boldacious,' a blend of 'bold' and 'audacious.'
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