The US Space Shuttle, Challenger, blows up after launch killing all 7 astronauts.
AD
1803 AD
France sells vast area of land west of the Mississippi to the United States in whats known as The Louisiana Purchase.
1671 AD
German mathematician-philosopher Gottfried Wilhelm von Leibniz, recognised as one of the founding fathers of calculus, designs a calculating machine called the Step Reckoner.
844 AD
The Picts are defeated by Kenneth MacAlpine (King of the Scots) and a new unified Scotland is established.
