Complex sentence: From then on, Bailly devoted himself to the history of science, publishing "A history of ancient astronomy" in 1775, followed by "A history of modern astronomy" (3 vols., 1782).
Split into simpler sentences: From then on, Bailly devoted himself to the history of science. He published "A History of Ancient Astronomy" in 1775, followed by "A History of Modern Astronomy" (3 vols., 1782).