1054

The Roman and Eastern churches split for good.

Macbeth is defeated by Malcolm and Siward of Northumbria, at Dunsinane.

Jaroslav of Kiev died.

Poland recaptured Selesia from Bohemia.

Henry I of France invades Normandy and is defeated at Mortemer.

The papal chair is empty this year.

Light from the supernova that created the crab nebula first reaches the Earth.

_{Thanks, an' a tip o' the hat to both Byzantine and Apatrix.}