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:
“Sometimes a neighbor whom we have disliked a lifetime for his arrogance and conceit lets fall a single commonplace remark that shows us another side, another man, really; a man uncertain, and puzzled, and in the dark like ourselves.”
—Willa Cather (1873–1947)
“Sir Richard cried in his English pride,
‘We have fought such a fight for a day and a night
As may never be fought again!
We have won great glory, my men!
And a day less or more
At sea or ashore,
We die—does it matter when?”
—Alfred Tennyson (1809–1892)