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cold dark matter |
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cold dark matter [¦kōld ′därk ‚mad·ər] (astronomy) A hypothetical type of dark matter consisting of particles that would have been in thermal equilibrium while traveling at nonrelativistic velocities in the early universe; possibilities include axions, photinos, gravitinos, heavy magnetic monopoles, and weakly interacting massive particles. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Under the gravitational influence of this unseen material, known as cold dark matter (SN: 4/23/05, p. The astronomers have their cold dark matter theory--and marketers have "brand equity. Based on their analysis, Wittman and his colleagues were able to rule out a well-known cosmological scenario known as the standard cold dark matter model, in which there is enough ordinary matter and dark matter in the universe to eventually stop its expansion. |
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