Twelve new moons were discovered in Jupiter’s orbit, bringing the planet’s total number of moons to 79.
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Father Junipero Serra started his first mission in California named 'Mission San Diego.'
The world's first atomic bomb was detonated.
The Ukrainian Soviet Socialist Republic's Parliament declared sovereignty over Ukrainian territories.
US Marine Major John Glenn's 'Project Bullet' broke the transcontinental speed record.
The opera 'Die Entführung aus dem Serail' by Wolfgang Amadeus Mozart premiered in Vienna, Austria.
