United Nations Secretary-General Ban Ki-moon arrived in Chicago on the afternoon of Sunday, 20 May, after a flight from New York.

UN: Secretary-General

United Nations Secretary-General Ban Ki-moon arrived in Geneva, Switzerland, early on Monday, 20 April.

UN: Secretary-General

Between 1966 and 1967, NASA sent five Lunar Orbiter spacecraft to the moon to capture images before the arrival of Apollo 11, which landed on the lunar suface July 20, 1969.

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President John F Kennedy's speech at Rice University in 1961, which laid down the gauntlet for a landing on the Moon, seemed a daunting challenge at the time, especially when the US had only sent Alan Shepard on a 20-minute sub-orbital flight.

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