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:
“A shadow
not of a bird, not of a cloud,
draws a dark stroke over
the hills, the mind.
And another, another.
Our fears keep pace with us.”
—Denise Levertov (b. 1923)
“If your mother tells you to do a thing, it is wrong to reply that you won’t. It is better and more becoming to intimate that you will do as she bids you, and then afterwards act quietly in the matter according to the dictates of your better judgment.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)