The first ballistic missile submarine was launched from Groton, Connecticut, US.
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Edward Snowden publicly declared that he was the source of the leaked NSA documents.
Soviet Space Program's Vega 1, which was launched on December 15, 1984, released a space probe to enter Venus.
Donald Duck made its first appearance in 'The Wise Little Hen.'
Major record label Columbia Records signed singer Bruce Springsteen.
The Church of England adopted the Book of Common Prayer.
