Portal:History of science/Selected anniversaries/May 19
- 1773 - Birth of Arthur Aikin, English chemist, mineralogist and scientific writer (d. 1854)
- 1914 - Birth of Max Perutz, Austrian-born molecular biologist, recipient of the Nobel Prize in Chemistry (d. 2002)
- 1939 - Birth of Dick Scobee, astronaut (d. 1986)
- 1971 - The Mars 2 spaceprobe is launched by the Soviet Union.
- 2000 - Death of Yevgeny Khrunov, cosmonaut (b. 1933)