25 September, 1992 – NASA launches the Mars Observer

The robotic space probe's main goal was to study Mars. Almost a year later all communications with it were lost.

26 September, 1917 – Battle of Polygon Wood begins

Fought during World War I between the British and Australian troops and German army near Ypres in Belgium, the battle ended in an Allied victory.

27 September, 1962 – Establishment of Yemen Arab Republic

Gamal Abdel Nasser declared the establishment of the Yemen Arab Republic after staging a coup that deposed the King Muhammad Al-Badr.

28 September, 1924 – First Flight Around the World

On April 6, 1924, four teams of pilots from the United States Army Air Service set out from Seattle, Washington in an attempt to circumnavigate the world.

29 September, 1954 – CERN established

The European Organisation for Nuclear Research, popularly known as CERN, was established by 12 European governments.

30 September, 1960 – Premier of The Flintstones

The animated series The Flintstones premiered on TV. It was set in the stone age and it detailed the lives of the Flintstone and Rubble families. It ran for six years until April 1, 1966.

01 October, 1949 – People's Republic of China is established

Mao Zedong declared the establishment of the People's Republic of China.