New Research Only Deepens Mystery of Dark Matter

October 18, 2011

New Research Only Deepens Mystery of Dark Matter

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Dark matter is invisible, betraying its presence only through its gravitational pull. Without dark matter holding them together, our galaxy’s speedy stars would fly off in all directions. The nature of dark matter is a mystery; a mystery that a new study has only deepened.

“After completing this study, we know less about dark matter than we did before,” said lead author Matt Walker, a Hubble Fellow at the Harvard-Smithsonian Center for Astrophysics.

Dwarf galaxies are composed of up to 99 percent dark matter and only 1 percent normal matter like stars. This disparity makes dwarf galaxies ideal targets for astronomers seeking to understand dark matter.

Walker and his co-author Jorge Penarrubia (University of Cambridge, UK) analyzed the dark matter distribution in two Milky Way neighbors: the Fornax and Sculptor dwarf galaxies. These galaxies hold one million to 10 million stars, compared to about 400 billion in our galaxy. The team measured the locations, speeds and basic chemical compositions of 1500 to 2500 stars.

Their measurements showed that in both cases, the dark matter is distributed uniformly over a relatively large region, several hundred light-years across. This goes completely against the current cosmological models, which suggest that dark matter should be clustered at the centers of galaxies.
“If a dwarf galaxy were a peach, the standard cosmological model says we should find a dark matter ‘pit’ at the center. Instead, the first two dwarf galaxies we studied are like pitless peaches,” said Penarrubia.

The study was published Monday in, The Astrophysical Journal and is available online.

Publisher: Salient News

7 comments on “New Research Only Deepens Mystery of Dark Matter”


Could Dark matter be all the photons that have been emitted once they hit something and are no longer traveling at the speed of light? I mean as far as I know photons in motion have a mass value, we just can;t detect them after they are absorbed by something else.. makes sense that much mass being clustered around stars and galaxies after 14 billion years of burning. Probably totally wrong, of course, but just a thought.


First hypothesis, then it’s test. Not always illuminating, as in this case, but always informative. With the revelation of neutrinos defying Einsteins second law. Perhaps a better understanding of Dark Matter will emerge once we become to terms with our now, ‘faster then light speed’ Universe.


Another nail in the coffin of this stupid DM crud.
Let’s just admit that Einstein’s GR is flawed at galactic scales just as Newton was wrong.

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how do they measure the chemical composition of stars light years away from earth? and what if they are wrong?


Dark Matter is to science as free enterprise is to Goldman Sachs


The neutrino experiments did not take into account the differences in time reference frames between earth-based clocks and the GPS satellite clocks. The satellite clocks run a bit slower to us because they’re traveling at about 9000 miles per hour and time dilation and space-time curvature occurs. That’s why the GPS atomic clocks are always being synchronized with earth clocks throughout the day. Einstein’s Special Relativity is still safe. The speeding neutrinos haven’t broken any laws yet.

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