◆ On this day

July 10

3 sourced moments from July 10 in history: Inventor Nikola Tesla was born (1856); The hottest air temperature ever was 56.7°C (1913); and Telstar, the first communications satellite, launched (1962).

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3 things happened on July 10

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1962 Language & Communication · Media & Communication

Telstar, the first communications satellite, launched

On July 10, 1962, Telstar 1 reached orbit and soon relayed the first live television pictures across the Atlantic.

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1913 Earth & Climate · Weather & Climate

The hottest air temperature ever was 56.7°C

On a July afternoon in 1913, a thermometer in Death Valley hit 134°F — still the world record more than a century later.

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1856 Technology · Engineering

Inventor Nikola Tesla was born

Born during a midnight thunderstorm on July 10, 1856, Tesla grew into the engineer who helped wire the world for alternating current.

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