Citizen Science, the Cosmos, and the Meaning of Life: How the Comet That Might One Day Destroy Us Gives Us the Most Transcendent Celestial Spectacle

Encounters with the beautiful and the sublime in the science of “the single most dangerous object known to humanity.”

On July 13, 1862, while a young experiment in democracy was being ripped asunder by its first Civil War, The Springfield Republican reported a strange and wondrous celestial sighting in the undivided sky, as bright as Polaris. Within days, two astronomers — Lewis Swift and Horace Parnell Tuttle — independently observed the phenomenon and determined it to be a colossal comet. Com...