Latest Dark matter Stories

Non-Astronomy Scientists May Help Answer Cosmology Conundrum
2013-11-28 06:41:07

April Flowers for redOrbit.com - Your Universe Online Measuring the invisible and intangible is a challenge for sure, but scientists have made inroads on one front: the study of dark matter and dark energy, two of the most mysterious substances in the cosmos. Although dark matter is intermixed with normal matter, it gives off no light, making it impossible to see. Dark energy presents even more challenges, yet researchers believe it works against gravity to pull our universe apart at...

Ancient Brown Dwarfs
2013-11-21 15:05:41

John P. Millis, PhD for redOrbit.com - Your Universe Online The galaxy is a diverse place, containing stars, planets, nebulous gas, black holes, and all matter of other objects, some of which we still do not understand. But among this vast array sits an object that is neither a star, nor a planet. These brown dwarfs have masses only a fraction of that of our Sun, but are still at least 13 times more massive than Jupiter. But because of the lack of substantial fusion, the surface of...

Axion Search For Dark Matter
2013-11-07 08:36:41

April Flowers for redOrbit.com - Your Universe Online A research team at the University of Washington, led by Professor Leslie Rosenberg, is hunting for a theorized but never-before-seen elementary particle called an axion. The researchers will use the recently retooled, extremely sensitive detector that is currently in a testing and shakeout phase at UW's Center for Experimental Nuclear Physics Astrophysics. Physicists in the late 1970s first hypothesized the axion as a solution to a...

LUX Dark Matter Detector Finds Nothing Yet
2013-10-30 13:49:42

Brett Smith for redOrbit.com - Your Universe Online Just three months into its operation the Large Underground Xenon (LUX) experiment is already the most sensitive dark matter detector in the world, according to scientists from Brown University. “LUX is blazing the path to illuminating the nature of dark matter,” said Rick Gaitskell, professor of physics at Brown University and project spokesperson. The detector sits over a mile below the Sanford Underground Research Facility in...

Experiment Looks For Dark Matter Particle
2013-10-29 08:16:46

John P. Millis, PhD for redOrbit.com - Your Universe Online As we peer into the darkness of space we find stars, planets, nebulae, and gas clouds. These objects are all made of normal matter – protons, neutrons, electrons, and other elementary particles. But it is the matter that we don’t see that has confounded astronomers for decades. An estimated 80 percent of the stuff that makes up the Universe does not interact electromagnetically. This aptly named dark matter is...

Hubble, Spitzer And Chandra Team Up For Frontier Fields Mission
2013-10-25 04:05:45

[ Watch the Video: Getting A Deeper Look At The Universe ] redOrbit Staff & Wire Reports - Your Universe Online In an ambitious new project, NASA officials are looking to combine three of the agency’s most powerful space telescopes in what is being called the deepest probe of the universe ever attempted. The mission, which has been dubbed “The Frontier Fields,” will feature the Hubble, Spitzer and Chandra space telescopes and is scheduled to last over the next three years....

Colliding Galaxies Create Supermassive Black Holes
2013-10-23 16:17:25

John P. Millis, PhD for redOrbit.com - Your Universe Online Normal black holes – a bit of a misnomer in and of itself as there is little that is “normal” about black holes of any type – are typically on the order of a few times the mass of our Sun or less. These objects are believed to result from the collapse of a massive star, an incredibly energetic event we call a Type II Supernova. But there exists at the center of virtually every galaxy we have studied a black hole of such...

Twisted Path Ancient Light Mapped
2013-10-23 09:11:27

John P. Millis, PhD for redOrbit.com - Your Universe Online When astronomers peer into the deepest regions of the cosmos they are not seeing the Universe as it exists today, but rather how it looked billions of years ago. That's because light emitted by distant galaxies moves at a finite speed and therefore requires billions of years to reach Earth. Further complicating the matter is the fact that the light does not travel along a direct line of site to Earth. The photons are deflected...

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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