Donald Osterbrock, astronomer, dies at 82

Donald Osterbrock, former director of Lick Observatory in California and author of a textbook on gaseous nebulae, has died at 82.

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<p><a href="http://www.physorg.com/news89299749.html">Donald Osterbrock, astronomer, dies at 82</a></p> <p>Donald Osterbrock, former director of Lick Observatory in California and author of a textbook on gaseous nebulae, has died at 82. </p>