◆ On this day

November 16

3 sourced moments from November 16 in history: Pizarro's capture of Atahualpa was an ambush, not a battle (1532); UNESCO Was Founded to Build Peace Through Education and Culture (1945); and The 1974 Arecibo message won't reach M13 for 25,000 years.

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3 things happened on November 16

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1974 Space · Astrophysics

The 1974 Arecibo message won't reach M13 for 25,000 years

Arecibo's 1,679-bit broadcast of 16 November 1974 was a three-minute showcase for a new radar transmitter, aimed at a star cluster 25,000 light-years away.

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1945 Society & Economy · Politics & Law

UNESCO Was Founded to Build Peace Through Education and Culture

In a war-scarred London, dozens of nations signed a charter betting that ideas, not armies, could keep the peace.

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1532 History · Empires & Civilizations

Pizarro's capture of Atahualpa was an ambush, not a battle

At Cajamarca in 1532, 168 Spaniards used the cover of diplomacy to seize a disputed Inca ruler and hold him for ransom.

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