6 May 1937 And 27 January 1986. Two traumatic air disasters highlighting the human cost of aviation: the transatlantic crossing of the luxurious airship Hindenburg ends in disaster while tragic events accompany the launch of the Challenger space shuttle.

25 December 1914

7 December 1941

9 May and 28 August 1963. The intriguing stories behind two of Britain's most audacious robberies centres on the parts played by the central characters mastermind criminals, victims, a getaway driver and the King himself.

22 August 1962 and 20 July 1944. Two assassination attempts that, if successful, might have changed the course of history: the Algerian Secret Army's attempt to shoot President de Gaulle of France and Colonel von Stauffenberg's planting of a bomb under Hitler's desk.

12 April 1633 and 12 April 1961. Two days on which science challenged the conventional view of our place in the universe: April 12, 1633 when Galileo stands trial for heresy for claiming the sun and not the Earth is the centre of the known universe, and exactly 328 years to the day later (1961) when Soviet cosmonaut Major Yuri Gagarin steps from the Earth into space.

September 1824 and 20 November 1953

14 April 1865 and 19 April 1995

1 May 1960 and 18 February 1962

19 May 1536 and 10 December 1936