Fri, Mar 26, 2010
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COSMOS Survey by Hubble

Whatever their true nature, dark energy (symbolized as Λ) and dark matter must dominate everything else by a large margin for the universe to "work." For those of you keeping score at home, the composition of our universe must be very nearly:

* 73% dark energy
* 23% non-baryonic dark matter
* 4% unseen baryonic matter
* <1% visible matter (stars, nebulae, and so forth)

The scales of scientific proof have just tipped more firmly toward this recipe. Yesterday a team of astronomers announced that the most distant galaxies appear misshapen due to weak bending, or lensing, of their light by the gravity of unseen dark-matter concentrations along the way... 

Fri, Mar 26, 2010  Permanent link

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