“Hirshfeld documents how the practice of astronomy changed between 1840 and 1940 thanks to innovative pioneers whose efforts made it possible to capture and preserve otherwise faint and fleeting images, and to decipher the cryptographic messages found in the light of celestial bodies. His riveting narrative brings to life their challenges, failures, and successes. It will captivate all who have observed the night sky.”

Barbara J. Becker, author of Unravelling Starlight: William and Margaret Huggins and the Rise of the New Astronomy