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Last updated on April 19, 2014 at 18:42 EDT
Aerial image of Cerro Tololo Interamerican Observatory in
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Aerial image of Cerro Tololo Interamerican Observatory in Chile

June 9, 2010
An aerial image of the Cerro Tololo Interamerican Observatory in Chile, taken after the dome of the Blanco 4-meter telescope was silvered early in 2001.