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Cracks in Dark Matter theory?

martu

Graduate Poster
Joined
Oct 23, 2002
Messages
1,003
From here http://www.newscientist.com/article...-hints-at-cracks-in-dark-matter-theories.html it seems new data is questioning the prevailing theory of Dark Matter though the article itself urges caution as it is so early.

A study of 28 galaxies has uncovered a curious feature, all of the galaxies despite their age and/or shape have

... five times more dark matter than normal matter where the dark matter density has dropped to one-quarter of its central value.

Rather broad and difficult question but any ideas how dark matter can account for this? Perhaps dark matter is fundamentally different from ‘normal’ matter in how it interacts with the gravity field?
 

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