1906-1983 Dutch-American astronomer who studied the structure of the Milky Way Galaxy. In 1947, he discovered small dark clouds that can be seen against the light of stars. He proposed that these clouds, now known as Bok globules, are made up of gas...

Bart Jan Bok (Hoorn, April 28 1906 – Tucson, August 5 1983) was a Dutch-American astronomer. He was born in the Netherlands, and educated at the Leiden and Groningen Universities. In 1929 he married fellow astronomer Dr. Priscilla Fairfield Bok,...