Quantcast
Last updated on April 21, 2014 at 10:19 EDT

Latest Dark matter Stories

Image 1 - Bounty Of Failed Stars Found By Astronomers
2011-10-12 03:46:58

A University of Toronto-led team of astronomers has discovered over two dozen new free-floating brown dwarfs, including a lightweight youngster only about six times heftier than Jupiter, that reside in two young star clusters. What's more, one cluster contains a surprising surplus of them, harboring half as many of these astronomical oddballs as normal stars. "Our findings suggest once again that objects not much bigger than Jupiter could form the same way as stars do. In other words,...

2011-10-07 13:39:42

Using one of the most sensitive neutrino detectors on the planet, an international team including physicists Laura Cadonati and Andrea Pocar at the University of Massachusetts Amherst are now measuring the flow of solar neutrinos reaching earth more precisely than ever before. The detector probes matter at the most fundamental level and provides a powerful tool for directly observing the sun´s composition. Pocar, Cadonati and colleagues report in the current issue of Physical Review...

Scientists Release Most Accurate Simulation Of The Universe
2011-09-30 04:35:17

'Bolshoi' supercomputer simulation provides new benchmark for cosmological studies The Bolshoi supercomputer simulation, the most accurate and detailed large cosmological simulation run to date, gives physicists and astronomers a powerful new tool for understanding such cosmic mysteries as galaxy formation, dark matter, and dark energy. The simulation traces the evolution of the large-scale structure of the universe, including the evolution and distribution of the dark matter halos in...

Image 1 - Einstein's Theory Of Relativity Confirmed
2011-09-28 14:51:08

New measurements have confirmed Albert Einstein's general theory of relativity after an experiment last week brought the theory into question. Einstein's general theory of relativity says that light emitted from stars and galaxies is slightly tugged by gravity from celestial bodies. Physicists reported last week that neutrinos can travel faster than light, which sent a blow to Einstein's theory of special relativity. The particles in the experiments conducted between the European...

Have CERN Experiments Broken The Speed Of Light?
2011-09-23 05:06:58

  Researchers at the European Centre for Nuclear Research (CERN) are reporting that they have discovered sub-atomic particles moving faster than the speed of light -- a finding which, if verified, could well turn the fundamental laws of the universe on their ear. According to various media reports Thursday, the experiment responsible for the discovery involved sending 15,000 beams of tiny particles known as neutrinos from the CERN laboratory near Geneva, Switzerland to the Gran...

Beware Of The Wildlife, Even In Apparently Quiet Galaxies
2011-09-16 07:55:19

  Even though a dwarf galaxy clear across the Milky Way looks to be a mouse, it may have once been a bear that slashed through the Milky Way and created the galaxy's spiral arms, writes an Iowa State University astronomer in the journal Nature. Curtis Struck, an Iowa State professor of physics and astronomy, uses a News & Views commentary in the Sept. 15 issue of Nature to add context and color to a study published in the same issue by a research team led by Chris W. Purcell of...

Extreme Weather Found On Alien World
2011-09-12 13:18:13

  Cosmic oddball may harbor a gigantic storm A University of Toronto-led team of astronomers has observed extreme brightness changes on a nearby brown dwarf that may indicate a storm grander than any seen yet on a planet. Because old brown dwarfs and giant planets have similar atmospheres, this finding could shed new light on weather phenomena of extra-solar planets. As part of a large survey of nearby brown dwarfs — objects that occupy the mass gap between dwarf stars and...

CRESST II Experiment Finds Possible Hints Of Dark Matter
2011-09-07 12:35:28

  Researchers at the CRESST II experiment in Italy say they may have seen more hints of dark matter. The team said they have spotted 67 events in their detectors that may be caused by dark matter particles called Wimps. The CRESST II experiment uses a few dozen supercooled calcium tungstate crystals to help look for dark mater from deep beneath the Gran Sasso mountain in Italy. When a particle hits one of the crystals, the crystal gives off a pulse of light, and sensitive...

2011-09-06 11:38:03

They were always mysterious. 26 years had to pass before the prediction of theoretical physics was confirmed and the existence of neutrinos was finally proven experimentally in 1956. The reason for this ordeal: Neutrinos only interact by the weak interaction with other particles of matter. When a cosmic neutrino approaches the earth, it has the best chance of passing through the whole globe unhindered. It is correspondingly difficult to find direct evidence of neutrinos with the help of a...

Spiral galaxy top view
2011-08-29 11:32:12

  Researchers at the University of California, Santa Cruz have used a supercomputer to create a spiral galaxy that matches our own Milky Way galaxy. The computer simulation is part of a physics project involving galaxy formation and evolution. "Previous efforts to form a massive disk galaxy like the Milky Way had failed, because the simulated galaxies ended up with huge central bulges compared to the size of the disk," Javiera Guedes, a graduate student in astronomy and...


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...

More Articles (13 articles) »