The book explores the intertwined lives and careers of renowned astronomers Percival Lowell and Edward Emerson Barnard through a "Parallel Lives" framework. William Sheehan utilizes extensive archival and unpublished materials to provide an in-depth analysis of their contributions to astronomy during the late 19th and early 20th centuries. The contrast between their approaches and findings offers a rich understanding of their impact on the field and highlights the evolution of astronomical research during this pivotal time.
