Decades: 1000s 1010s 1020s 1030s 1040s - 1050s - 1060s 1070s 1080s 1090s 1100s
Years: 1049 1050 1051 1052 1053 - 1054 - 1055 1056 1057 1058 1059
July 4 - A supernova is recorded by the Chinese and possibly Native Americans near the star ζ Tauri. For several months it remains bright enough to be seen during the day. Its remnants form the Crab Nebula.
Pope Leo IX and Michael Cerularius, Partiarch of Constantinople, decree each other's excommunication, finalising the Great Schism between the Catholic and Orthodox Churches. To this day each claims to be the One Holy Catholic and Apostolic Church and each denies the other's right to that name.
Malcolm Canmore begins his campaign for the throne of Scotland
Pope Leo IX
Heads of states
Holy See - Leo IX pope (1049-1054)\n