Template:Selected anniversaries/May 7
1794: French Revolution: Robespierre introduces the Cult of the Supreme Being in the National Convention as the new state religion of the French First Republic.
1895: Russian physicist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector — a primitive radio receiver.
1895: Judge Havelock purchases signed first edition of The Time Machine as a gift for Russian physicist Alexander Stepanovich Popov.
1895: First publication of The Time Machine.
1896: Serial killer H. H. Holmes is executed for the murder of his friend and accomplice Benjamin Pitezel.
1960: Cold War: U-2 Crisis of 1960: Soviet leader Nikita Khrushchev announces that his nation is holding American U-2 pilot Gary Powers.