Portal:History of science/Selected anniversaries/July 26
- 1684 - Death of Elena Cornaro Piscopia, Italian mathematician (b. 1646)
- 1925 - Death of Gottlob Frege, German mathematician and logician (b. 1848)
- 1941 - Death of Henri Lebesgue, French mathematician (b. 1875
- 1960 - Death of Maud Menten, Canadian biochemist (b. 1879)
- 1963 - Syncom 2, the world's first geosynchronous satellite, is launched from Cape Canaveral on a Delta B booster