How is Halley’s Comet connected with the Bayeux Tapestry?

Halley’s Comet is connected to the Bayeux Tapestry because the comet was visible in the sky six months prior to the Norman Conquest of England in 1066 and is depicted within the embroidery.1

While the British scientist Edmond Halley is famous for predicting the return of the comet that now bears his name, the connection to the tapestry is historical rather than scientific; the comet's appearance in 1066 was recorded by observers of the time and captured in the artistic narrative of the Battle of Hastings.1