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2009: Day 181 Though the victory would be fleeting -- they would fall to the Spanish empire the following year -- the people of Tenochtitlan managed to expel the thieving, brutally proselytizing conquistadors from their island city on Lake Texcoco on this date in 1520. One hundred fifty years ago (1859) Charles Blondin , a French acrobat, crosses Niagara Falls on a tightrope. Charles J. Guiteau , assassin of President James Garfield, was hanged in Washington, D.C. this day in 1882. Curiously, professional wrestlers Man Mountain Dean and Ed "Strangler" Lewis were both born on this date in 1891. In 1905, Albert Einstein publishes On the Electrodynamics of Moving Bodies , reconciling Maxwell's equations with the existing laws of mechanics via two postulates, quietly introducing the world to what would come to be known as special relativity . One hundred one years ago (1908) a blast estimated to most likely have been between 10 and 15 megatons occurred in the air over the...