1642 in science
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The year 1642 in science and technology
See also: 1641 in science, other events of 1642, 1643 in science, list of years in science.
Exploration
- Abel Janzoon Tasman, Dutch explorer, sights Tasmania, which he names Anthony Van Dieman's Land.
Births
- December 25 - Sir Isaac Newton, English mathematician and scientist.