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

1562

Naples, Italy, banned kissing in public.

1974

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

1959

Barbie was presented to the public for the first time.

1497

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

1961

The Soviet spacecraft Sputnik 9 was launched into orbit.

What Happened on Mar 9?

What Happened in 1611?