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Posted by Richard Ruquist on February 13, 2003 11:59:06 UTC

Dark matter has been indirectly detected from astronomical observations. Analysis using Newton’s gravitational theory of the motion of stars, galaxies and galactic clusters, and also analysis using Einstein’s theory of the bending of light around these collections of stars, all indicate that the amount of dark matter (matter that is invisible for our telescopes) is at least 10 times the mass of the visible (star-like) matter in the universe. Presently it seems clear that Dark Matter has the same large-scale distribution as galactic clusters and super-clusters, except that the Dark Matter ‘halos’ extend somewhat beyond the visible galaxy and often overlaps several galaxies. Dark Matter ‘halos’ are usually but not necessarily spherical. The exact shape of galactic Halos is being actively researched. For example, the Milky Way Halo appears to incorporate its satellite galaxies.

The candidate constituents of dark matter are: axions, wimps, neutrinos, black holes, brown dwarfs and large planets. No single candidate has sufficient mass except possibly axions or wimps, neither of which has been as yet detected; whereas the other candidates are known to exist. Wimps (Weakly Interacting Massive Particles) are theoretically predicted in the super-symmetric theories. Axions are predicted in the Grand Unification Theory (GUT) and are thought to be the reason why neutron electric dipole moments are zero.

Dark energy is inferred from the astronomical observation of Type 1A suppernovae: that the expansion of the universe is accelerating. Therefore there must exist an expansion force that is pushing the universe apart. That is called dark energy.

My point is that dark energy, or rather the force of expansion could come from the matter of dark matter if that matter has a new kind of charge in which like charges accumulate and unlike charges repulse.

yanniru

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