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.
Read more about Self-interacting Dark Matter: Further Reading
Famous quotes containing the words dark and/or matter:
“This seems a long while ago, and yet it happened since Milton wrote his Paradise Lost. But its antiquity is not the less great for that, for we do not regulate our historical time by the English standard, nor did the English by the Roman, nor the Roman by the Greek.... From this September afternoon, and from between these now cultivated shores, those times seemed more remote than the dark ages.”
—Henry David Thoreau (1817–1862)
“The people who resent me do so because I’m a woman, I’m young, and I’m a Bhutto. Well, the simple answer is, it doesn’t matter that I’m a woman, it doesn’t matter that I’m young, and it’s a matter of pride that I’m a Bhutto.”
—Benazir Bhutto (b. 1953)