Portal:History of science/Selected anniversaries/September 17
- 1677 - Birth of Stephen Hales, English physiologist, chemist, and inventor (d. 1761)
- 1743 - Birth of Marquis de Condorcet, French mathematician (d. 1794)
- 1683 - Antonie van Leeuwenhoek writes a letter to the Royal Society describing "animalcules": the first known description of bacteria
- 1826 - Birth of Bernhard Riemann, German mathematician (d. 1866)
- 1836 - Death of Antoine Laurent de Jussieu, French botanist (b. 1748)
- 1976 - The first Space Shuttle, Enterprise, is unveiled by NASA