Johann Fabricius and the Discovery of Sunspots

On March 9, 1611

Dutch astronomer Johannes Fabricius discovered sunspots.

Sunspots are regions of reduced surface temperature on the sun.

This Day in History - March 9

1945

The United States Air Force firebombed Tokyo, Japan, killing over 100,000 civilians.

1497

Astronomer Nicolaus Copernicus recorded his first observation after witnessing a moon eclipse with a distant star.

1974

Lieutenant Hiroo Onoda became the last Japanese soldier to surrender, 29 years after WWII ended.

1908

The Inter Milan soccer club was formed.

1926

Bertha Landes became the first female mayor of a major city (Seattle) in the US.

What Happened on Mar 9?

What Happened in 1611?