New Scientist has a piece on the uncommon art of forensic astronomy. Texas State University physicist Donald Olson has solved the mystery of Walt Whitman's meteor poem, thanks to clues found in an 1860 painting by Frederic Church. "Before we were done we had collected 300 records of observations [of the event]. I think this may be the most observed, and most documented, single meteor event in history. From the Great Lakes to New England, every town that had a newspaper wrote about that meteor. ... So we've got one of America's greatest landscape artists, Frederic Church, watching the meteor from Catskill, and we've got one of America's greatest poets, Walt Whitman, watching the meteor from New York City." The field of forensic astronomy may have gotten its start more than 30 years before, when art historian Roberta Olson argued convincingly that the lifelike comet in Giotto's "Adoration of the Magi" in Padua, Italy, in fact depicted Halley's Comet in its visitation of 1301.