1969 - Mariner 7 is launched.
1712 - Claude Bourgelat, French veterinary surgeon
1817 - Karl Wilhelm von NÃ¤geli, Swiss biologist
1845 - Wilhelm Conrad RÃ¶ntgen, German physicist, Nobel Prize laureate
1847 - Otto Wallach, German chemist, Nobel Prize laureate
1847 - Otto Wallach,…
1785- Claude-Louis Navier, French physicist
1846 - Ira Remsen, American chemist
1897 - John Franklin Enders, American virologist and Nobel Prize laureate
1902 - Walter Houser Brattain, American physicist and Nobel Prize laureate
1865 - Heinrich Lenz, German physicist
1896 - An Austrian newspaper reports that Wilhelm Roentgen has discovered a type of radiation later known as X-rays.
1972 - Richard Nixon orders the development of a space shuttle program.
2005 - Eris, the largest known dwarf planet in the solar system, is discovered.
1865 - Julio…
1923 - Insulin first became generally available for use by diabetics.
1452 - Leonardo da Vinci, Italian Renaissance polymath (above)
1552 - Pietro Cataldi, Italian mathematician
1641 - Robert Sibbald, Scottish physician
1707 - Leonhard Euler, Swiss mathematician
1710 - William…