Yuri Gagarin became first person in space / First animal patented in the U.S. - April 12
Apr 12, 2021
11:14
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On this day in 1961, Soviet cosmonaut Yuri Gagarin orbited Earth once, earning him the title of the first person to travel in space. / On this day in 1988, the OncoMouse was patented in the U.S.
This Day in History Class