New Worlds, New Horizons with X-ray Astronomy

Saturday, August 24, 2013

Steve Ballmer, Meet Ibn Khaldun - NYTimes.com

via Paul Krugman Blog

Randall Smith at 7:37 PM

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Randall Smith: I'm an astrophysicist at the Smithsonian Astrophysical Observatory in Cambridge, MA. Any opinions expressed are my personal views and not those of the Smithsonian.

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