Latest Dark matter Stories

Image 1 - Astronomers Discover Radio Waves From Brown Dwarf
2012-04-30 12:49:53

Penn State University astronomers have discovered record-breaking radio waves from an ultra-cool star that is not much warmer than the planet Jupiter. The team used a giant 1,000-feet radio telescope at Arecibo, Puerto Rica to look for radio signals from a class of objects known as brown dwarfs.  Brown dwarf's bridge the gap between gas giant planets, and hydrogen-fusing stars. The astronomers found that a brown dwarf named J1047+21 that lies 33.6 light years away in the...

Image 1 - Milky Way’s Companions May Spell Trouble For Dark Matter
2012-04-25 07:46:27

Astronomers from the University of Bonn in Germany have discovered a vast structure of satellite galaxies and clusters of stars surrounding our Galaxy, stretching out across a million light years. The work challenges the existence of dark matter, part of the standard model for the evolution of the universe. PhD student and lead author Marcel Pawlowski reports the team´s findings in a paper in the journal Monthly Notices of the Royal Astronomical Society. The Milky Way, the galaxy we...

Mysterious Dark Matter Becomes More Mysterious
2012-04-18 11:33:19

[ Watch the Video ] According to a new study, large amounts of dark matter do not surround the Sun, despite some widely accepted theories. Some scientists believe that the Sun is accompanied by dark matter, which is an invisible substance that can only be detected indirectly by the gravitational force its exerts. Theories predict that the average amount of dark matter in the Sun's part of the galaxy should be in the range of .88-pounds to 2.2-pounds of dark matter in a volume the...

Scientists Say They've Found The Elusive Majorana Fermion
2012-04-15 04:48:19

After a search that has lasted roughly three-quarters of a century, researchers believe they have at long last discovered evidence of an elusive particle that could be its own anti-particle. The existence of the particle, which is known as the Majorana fermion, was first predicted some 75 years ago, according to BBC News Science Correspondent Jonathan Amos. Now, a team of Dutch scientists believe that they have created an electronic device small enough to test for the Majorana, and they...

UCLA's "Time Machine" To Study Distant Galaxies
2012-04-13 10:28:20

[ Watch the Video ] A team of researchers at the University of California, Los Angeles (UCLA) are building an advanced scientific instrument unlike any other ever built before, with the aim to study some of the oldest galaxies in the universe. The five-ton spectrometer, known as MOSFIRE (Multi-Object Spectrometer for Infra-Red Exploration), has been installed in the Keck I Telescope at the WM Keck Observatory in Hawaii where, once fully operational, it will receive infrared light that...

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...

2012-04-13 03:26:20

A University of Oklahoma assistant professor and colleagues have identified two white dwarf stars considered the oldest and closest known to man.  Astronomers identified these 11- to 12-billion-year-old white dwarf stars only 100 light years away from Earth.  These stars are the closest known examples of the oldest stars in the Universe forming soon after the Big Bang, according to the OU researcher. Mukremin Kilic, assistant professor of physics and astronomy in the OU College...

Dwarf Galaxies Observations Provide New Insights On Dark Matter
2012-04-04 06:43:14

[ Watch the Video ] There's more to the cosmos than meets the eye. About 80 percent of the matter in the universe is invisible to telescopes, yet its gravitational influence is manifest in the orbital speeds of stars around galaxies and in the motions of clusters of galaxies. Yet, despite decades of effort, no one knows what this "dark matter" really is. Many scientists think it's likely that the mystery will be solved with the discovery of new kinds of subatomic particles, types...

New Data Supports Einstein's Explanation For Dark Matter
2012-04-03 08:07:50

New information obtained by scientists using a 10-meter telescope located in Antarctica has strengthened the most widely accepted explanation for the mysterious force that is behind the increasingly rapid expansion of the universe, according to a pair of press releases published this week. According to a statement from the National Science Foundation (NSF), the most recent South Pole Telescope (SPT) data "strongly" supports Albert Einstein's cosmological constant, said to be the leading...

2012-03-30 08:27:44

Berkeley Lab scientists are leaders of BOSS, the Baryon Oscillation Spectroscopic Survey- They and their colleagues in the third Sloan Digital Sky Survey have announced the most precise measurements ever made of the era when dark energy turned on Some six billion light years ago, almost halfway from now back to the big bang, the universe was undergoing an elemental change. Held back until then by the mutual gravitational attraction of all the matter it contained, the universe had been...

Latest Dark matter Reference Libraries

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...

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...

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....

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...

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
  • An evil spirit; a devil.
  • A nightmare.
  • In astrology, the twelfth house of a scheme or figure of the heavens: so called from its signifying dreadful things, such as secret enemies, great losses, imprisonment, etc.
'Cacodemon' comes from a Greek term meaning 'evil genius.'