A paper on the discovery of Earth's wobbling motion on its axis by British astronomer, James Bradley was read at the Royal Society. For this variation, he coined the name nutation (from Latin “nutare” to nod). Bradley first noticed the fluctuation during his studies of parallax at Molyneux's observatory. Attributing it to the moon's gravitational influence, he withheld any announcement until he had observed a full cycle of the motion of the moon's nodes, taking about 18.6 years. In 1748, he was honored with the Copley Medal of the Royal Society.

Jimmy Hoffa Born: James Riddle Hoffa 14th February 1913, Brazil, Indiana, U.S. Died: July 30th 1975, Bloomfield Township, Michigan, U.S. Known For: Remembered as the General President of the International Brotherhood of Teamsters, one of the most powerful unions in the United States and with links to organized crime. He is also remembered for his conviction for attempted bribery of a grand juror and defrauding the union's pension fund. Following his release in 1971 he attempted to rebuild his influence in the Union but on July 30, 1975 he disappeared from the Machus Red Fox Restaurant in Bloomfield and was never seen again. Hoffa is the subject of many urban legends as to who, how and why he was murdered and books and movies have been made about his life.