Results for "Astronomy and astrophysics"

1. SI History Chronology

   Magnetic Observatory to be Built at SI

   • Date: February 3, 1853

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3. SI History Chronology

   Smithsonian Lectures in 1955

   • Date: 1955

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5. SI History Chronology

   S. Dillon Ripley, Secretary, 1964-1984, Dies

   • Date: March 12, 2001 19th century

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