Hidden Nook
"Because in Cyberspace, no one can hear you scream."
Thursday, February 03, 2005
Dark Matter?
[Media Source*] (Space News) What the heck is it? Well, according to scientists it is what makes up 95% of the universe. It looks like some researchers have "found" some of it.
The total mass of the universe, visible and hidden stuff, is calculated based on how stars huddle in galaxies and the fact that clusters of galaxies are gravitationally glued together. Normal matter alone can't explain the full gravity of this universal situation.
Dark energy is presumed to exist because the universe is expanding at an ever-increasing pace, and something must be driving that acceleration.
It will be interesting to see what exactly dark matter (along with dark energy) is and how it functions with regards to the rest of the Universe. Picture below. Selah!
Image Credit: Spectrum: NASA/SAO/CXC/F.Nicastro et al.; Illustration: CXC/M.Weiss
This illustration shows the absorption of X-rays from the quasar Mkn 421 by two intergalactic clouds of diffuse hot gas, and a portion of the Chandra X-ray spectrum of the quasar. The spectrum provides evidence that three separate clouds of hot gas are filtering out, or absorbing X-rays from Mkn 421.
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By Darnell Clayton ⢠2:55 PM ⢠Email Post ⢠â¢
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