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wolram
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http://space.newscientist.com/chann...galaxy-map-to-probe-dark-energys-history.html
In this cosmic cacophony, one particular note was louder than the rest, and it survives to this day as a characteristic wavelength in the clustering of galaxies.
"Galaxies are slightly more likely to be separated by 500 million light years than by 400 or 600 million light years," Eisenstein told New Scientist. By plotting the positions of millions of galaxies, the Sloan team expects to see this pattern over a wide swath of the universe.
What sound wave was this and how did the scientists deduce it?
In this cosmic cacophony, one particular note was louder than the rest, and it survives to this day as a characteristic wavelength in the clustering of galaxies.
"Galaxies are slightly more likely to be separated by 500 million light years than by 400 or 600 million light years," Eisenstein told New Scientist. By plotting the positions of millions of galaxies, the Sloan team expects to see this pattern over a wide swath of the universe.
What sound wave was this and how did the scientists deduce it?