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American astronomer, astronaut, writer, blogger and advocate (1940-2011)
Brian O'Leary (* 27. January 1940 in Boston; † 28. July 2011 in Ecuador) was an american astronomer, astronaut, writer, blogger and advocate. He was 71 years old. He studied at Williams College. He worked at National Aeronautics and Space Administration. His cause of death was cancer.