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:
“The Past—the dark unfathom’d retrospect!
The teeming gulf—the sleepers and the shadows!
The past! the infinite greatness of the past!
For what is the present after all but a growth out of the past?”
—Walt Whitman (1819–1892)
“And no matter how all this disappeared,
Or got where it was going, it is no longer
Material for a poem. Its subject
Matters too much, and not enough, standing there helplessly
While the poem streaked by, its tail afire, a bad
Comet screaming hate and disaster....”
—John Ashbery (b. 1927)