The year 1639 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, an English astronomer, 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

Births

Deaths