On this day in 1785, Caroline Herschel, became the first woman to discover a comet.
(to learn more about Herschel go to Beingwoman's Aug 1 entry 2006.)
On this day in 1911, Harriet Quimby was the first woman in the United States and the second woman in the world to receive a pilot's license.
Born this day in 1818, Maria Mitchell, astronomer. In 1847, she was the first American person to discover and record a comet sighting.
On this day in 1919, Queen Wilhelmina opened the first Air Fair in Amsterdam.