Scientists Find Hint of Dark Matter From Cosmos
A $2 billion cosmic ray detector on the International Space Station has found the footprint of something that could be dark matter, the mysterious substance that is believed to hold the cosmos together but has never been directly observed, scientists say.
But the first results from the Alpha Magnetic Spectrometer, known by its acronym AMS, are almost as enigmatic as dark matter itself. They show evidence of new physics phenomena that could be the strange and unknown dark matter or could be energy that originates from pulsars, scientists at the European particle physics laboratory near Geneva announced Wednesday.
The results from the detector are significant, because dark matter is thought to make up about a quarter of all the matter in the universe. Unraveling the mystery of dark matter could help scientists better understand the composition of our universe and, more particularly, what holds galaxies together.
More - Link >>> http://abcnews.go.com/Technology/wireStory/scientists-find-hint-dark-matter-cosmos-18870316#.UVyHiVE_2YA
Sources: Associated Press, ABC News.
Dark Matter Possibly Found by $2 Billion Space Station Experiment
Tia Ghose, SPACE.com Staff Writer
Date: 03 April 2013 Time: 11:00 AM ET
| The Alpha Magnetic Spectrometer-2 (AMS) is seen in space shuttle Endeavour's bay. Shortly after this image was taken, the AMS was moved from the payload bay to the station's starboard truss on May 19, 2011 (Flight Day 4). |
The detector, the Alpha Magnetic Spectrometer (AMS), measures cosmic-ray particles in space. After detecting billions of these particles over a year and a half, the experiment recorded a signal that may be the result of dark matter, the hidden substance that makes up more than 80 percent of all matter in the universe.
AMS found about 400,000 positrons, the antimatter partner particles of electrons. The energies of these positrons suggest they might have been created when particles of dark matter collided and destroyed each other.
More - Link >>> http://www.space.com/20490-dark-matter-discovery-space-experiment.html
Source: Space.com .
More on Dark Matter: Link >>> http://en.wikipedia.org/wiki/Dark_matter
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