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Events
1970 – Explorer 1 re-enters the Earth’s atmosphere (after 12 years in orbit).
1994 – Bill Kimbel, Don Johanson and Yoel Rak report the finding in Ethiopia of the first fairly complete Australopithecus afarensis skull (AL 444-2, see above)
Births
1596 – René Descartes, French mathematician
1730 – Étienne Bézout, French mathematician
1777 – Charles Cagniard de la Tour, French physicist
1778 – Coenraad Jacob Temminck, Dutch zoologist
1847 – Yegor Ivanovich Zolotarev, Russian mathematician
1890 – William Lawrence Bragg, English physicist, Nobel laureate
1906 – Sin-Itiro Tomonaga, Japanese physicist, Nobel laureate
1934 – Carlo Rubbia, Italian physicist, Nobel laureate
Deaths
1727 – Sir Isaac Newton, English mathematician and physicist
1877 – Antoine Augustin Cournot, French mathematician
1917 – Emil Adolf von Behring, German physician, Nobel laureate
1945 – Hans Fischer, German chemist, Nobel laureate
2001 – Clifford Shull, American physicist, Nobel laureate
2005 – Stanley J. Korsmeyer, American oncologist