The Crossroads Baker device is the first underwater nuclear weapon test.
A high-speed train derails in Spain rounding a curve with an 80 km/h (50 mph) speed limit at 190 km/h (120 mph), killing 78 passengers.
The Ford Motor Company sells its first car.
Martial law in Poland is officially revoked.
NASA’s Space Shuttle program ends with the landing of Space Shuttle Atlantis on mission STS-135 at NASA’s Kennedy Space Center
The Polaris missile is successfully launched from a submarine, the USS George Washington, for the first time.
In a private meeting with U.S. President Ronald Reagan, French President François Mitterrand reveals the existence of the Farewell Dossier, a collection of documents showing the Soviet Union had been stealing American technological research and development.
The Islamic State of Iraq and the Levant requires Christians to either accept dhimmi status, emigrate from ISIL lands, or be killed.
TWA Flight 800: Off the coast of Long Island, New York, a Paris-bound TWA Boeing 747 explodes, killing all 230 on board.
The Mont Blanc Tunnel linking France and Italy opens.