2011 Nobel Prize: Dark Energy feat. Sean Carroll

Guest narrator Sean Carroll of Caltech describes dark energy and the acceleration of the universe, the discovery of which was awarded the 2011 Nobel Prize in Physics on October 4th. Tweet it - http://bit.ly/oCD2jo Facebook it - http://on.fb.me/oagPm3 minutephysics is now on Google+ - http://bit.ly/qzEwc6 And facebook -

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