About
Astronomer remembered for establishing a wood ring-dating methodology called dendrochronology. He also researched the relationship between the solar cycle and the formation of tree rings.
Before Fame
During the 1890s, he worked at the Lowell Observatory in Flagstaff, Arizona.
Trivia
Several Mars and Moon craters were named after him.
Family Life
He was born Andrew Ellicott Douglass in Windsor, Vermont. He later settled in Tucson, Arizona.
Associated With
He began his scientific career as an assistant to renowned astronomer Percival Lowell.
