In astrophysics self-interacting dark matter is a hypothetical form of dark matter consisting of particles with strong self-interactions. This type of dark matter was postulated to resolve a number of conflicts between observations and simulations on the galactic scale and smaller. Self-interacting dark matter has also been postulated as an explanation for the DAMA annual modulation signal.
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Famous quotes containing the words dark and/or matter:
“will your eyes lie in wait,
little field mice nestling on their paws?
Perhaps they will say nothing,
perhaps they will be dark and leaden,
having played their own game
somewhere else....”
—Anne Sexton (1928–1974)
“If a being suffers there can be no moral justification for refusing to take that suffering into consideration. No matter what the nature of the being, the principle of equality requires that its suffering be counted equally with the like suffering—insofar as rough comparisons can be made—of any other being.”
—Peter Singer (b. 1946)