NASA’s Mariner 9 became the first spacecraft to orbit another planet when it entered Mars’ orbit.
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A 19-mile crater was found under the Greenland Glacier.
Herman Melville's novel 'Moby Dick' was published by Harper & Brothers in New York.
The musical 'Chicago' opened at Richard Rodgers Theater in New York City.
The British Broadcasting Company (BBC) began its radio service in the United Kingdom.
Ruby Bridges became the first African American girl to take classes at an all-white school in Louisiana.
