From Wikipedia, the free encyclopedia.
The year 1639 CE in science and technology included many events, some of which are listed
See also: 1638 in science, other events of 1639, 1640 in science, list of years in science.
Astronomy
- November 24 - Jeremiah Horrocks observes the transit of Venus
Exploration
- The Casiquiare canal, a river forming a natural canal between the Amazon River and Orinoco River basins, is first encountered by Europeans
