At 340 days, Astronaut Scott Kelly completed the longest single mission aboard the International Space Station.
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Nebraska became the 37th state to join the United States of America.
Rebecca Lee Crumpler became the first African American female physician.
Soviet Premier Joseph Stalin was found semi-conscious after suffering from a stroke.
Ohio became the 17th state to join the United States of America.
The Venera 3 space probe became the first human-made object to land on another planet.
