Aitken, Robert Grant (1864–1951) American astronomer Born in Jackson, California, Aitken obtained his AB in 1887 and his AM in 1892 from Williams College, Massachusetts. He began his career at the University of the Pacific, then in San Jose, as professor of mathematics from 1891 until 1895 when he joined the staff of Lick Observatory, Mount Hamilton, California. He remained at Lick for his entire career, ...