In a duel held in Weehawken, New Jersey, Vice President Aaron Burr fatally shoots his long-time political antagonist Alexander Hamilton. Hamilton, a leading Federalist and the chief architect of America's political economy, died the following day...

...Burr became vice president, but Jefferson grew apart from him, and he did not support Burr's renomination to a second term in 1804. That year, a faction of New York Federalists, who had found their fortunes drastically diminished after the ascendance of Jefferson, sought to enlist the disgruntled Burr into their party and elect him governor. Hamilton campaigned against Burr with great fervor, and Burr lost the Federalist nomination and then, running as an independent for governor, the election. In the campaign, Burr's character was savagely attacked by Hamilton and others, and after the election he resolved to restore his reputation by challenging Hamilton to a duel, or an "affair of honor," as they were known.

Affairs of honor were commonplace in America at the time, and the complex rules governing them usually led to an honorable resolution before any actual firing of weapons. In fact, the outspoken Hamilton had been involved in several affairs of honor in his life, and he had resolved most of them peaceably. No such recourse was found with Burr, however, and on July 11, 1804, the enemies met at 7 a.m. at the dueling grounds near Weehawken, New Jersey. It was the same spot where Hamilton's son had died defending his father's honor two years before...

Skylab, a science and engineering laboratory, was launched into Earth orbit by a Saturn V rocket on 14 May 1973. Three crews of 3 men each visited the station, with their missions lasting 28, 59, and 84 days. Circling 50 degrees north and south of the equator at an altitude of 435 km, Skylab had an orbital period of 93 minutes. There were a plethora of UV astronomy experiments done during the Skylab lifetime, as well as detailed X-ray studies of the Sun. Skylab fell from orbit on 11 July 1979.