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Contributing to NOVA's The Nature of Reality Blog

As a long-time fan of PBS and NOVA, I was delighted to be invited to contribute to their new physics blog, The Nature of Reality.  The topic I decided to write about is a cosmic mystery called dark flow.  It represents a seeming movement of galaxy clusters toward a patch of the sky.


My inaugural post is available at:

Dark Flow: Tugs from Beyond the Observable Universe?


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