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.
The discovery of an Earth-like planet 3.2 times bigger than our world was announced.
Louis Timothee became America's first paid librarian.
A 7.8 magnitude earthquake hit Kaikōura, New Zealand.
Dr. Fritz Derom performed a successful single-lung transplantation on patient Aloïs Vereecken at the University Hospital in Ghent, Belgium.
