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:
“Hast ever ben in Omaha
Where rolls the dark Missouri down,
Where four strong horses scarce can draw
An empty wagon through the town?
Where sand is blown from every mound
To fill your eyes and ears and throat;
Where all the steamboats are aground,
And all the houses are afloat?...
If not, take heed to what I say,
You’ll find it just as I have found it;
And if it lies upon your way
For God’s sake, reader, go around it!”
—For the State of Nebraska, U.S. public relief program (1935-1943)
“That the mere matter of a poem, for instance—its subject, its given incidents or situation; that the mere matter of a picture—the actual circumstances of an event, the actual topography of a landscape—should be nothing without the form, the spirit of the handling, that this form, this mode of handling, should become an end in itself, should penetrate every part of the matter;Mthis is what all art constantly strives after, and achieves in different degrees.”
—Walter Pater (1839–1894)