The nation's capital is founded, the world gets its first parking meter, Joltin' Joe sets an unbreakable record, and man heads to the moon, all on this day.
1945: The Atomic Age begins when the United States successfully detonates a plutonium-based test nuclear weapon at the Trinity site near Alamogordo, New Mexico, as part of the top-secret Manhattan Project.
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WYFF via CNN Video
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