2007-09-16 04:13:43 · 7 answers · asked by aniketxl 1 in Science & Mathematics ➔ Astronomy & Space
gas, i believe
2007-09-16 04:16:32 · answer #1 · answered by Anonymous · 0⤊ 0⤋
In models of evolution of galaxies and galaxy clusters, the most realistic results have the dark matter being a gas of particles that interact only via the gravitational force. The particles in the gas must have mass, so that they can be "cold".
2007-09-16 11:43:41 · answer #2 · answered by cosmo 7 · 0⤊ 0⤋
Neutrinos are more similar to photons (light) than anything else.
Weakly Interacting Massive Particles have never been observed, but they are likely similar to neutrinos, possibly comprising gravitons and other such objects. Same for supersymmetric particles.
Massive Compact Halo Objects are very large, low albedo objects in the halo of galaxies. It is believed these comprise the smallest proportion of dark matter.
2007-09-16 11:24:29 · answer #3 · answered by Bobo_the_Ebola_Monkey 3 · 0⤊ 1⤋
Currently it's unknown. All we know basically is that it's an non-visible mass.
In astrophysics and cosmology, dark matter is hypothetical matter of unknown composition that does not emit or reflect enough electromagnetic radiation to be observed directly, but whose presence can be inferred from gravitational effects on visible matter.
2007-09-16 11:24:00 · answer #4 · answered by Jesus & Kristle 5 · 3⤊ 0⤋
California?
2007-09-16 14:22:43 · answer #5 · answered by Anonymous · 0⤊ 0⤋
It is unknown what it is as we don't know much about it. I would think that it would be it's own state of matter.
2007-09-16 14:38:12 · answer #6 · answered by Mr. Smith 5 · 0⤊ 0⤋
Dark matter, if it exists, is in a dark state.
Doug
2007-09-16 11:34:41 · answer #7 · answered by doug_donaghue 7 · 0⤊ 1⤋