18-02-11

Dark energy is not directly detectable, but scientists can track its footsteps through history.

 

dark matter,the hunt,cosmology

 

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http://upload.wikimedia.org/wikipedia/commons/c/c9/Dark_m...

 

A massive survey of distant galaxies should help unravel a mind-bending cosmic mystery: Why has the expansion of the universe sped up ?


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http://news.discovery.com/space/dark-energy-galaxies-univ...

 

 

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