What happened 1586 AD

Galileo created a thermoscope, a forerunner of the thermometer, and, in 1586, published a small book on the design of a hydrostatic balance he had invented (which first brought him to the attention of the scholarly world).

Mount Kelud was a volcanic eruptions in Indonesia. It began in 1586. The death toll from this disaster estimated to be 10,000 people.

The Archduke of Austria, Leopold V, was born in Austria.