A comet collided with the Earth’s atmosphere from the Constellation of Orion on 17 Jan AD 773 with coma stretched across the whole sky and disappeared within one day with ‘dust rain’ in the daytime.
— Old Tang Dynasty Book
https://cosmictusk.com/wp-content/uploads/Causes-of-an-AD-774–775-14C-increase.pdf
https://cosmictusk.com/wp-content/uploads/A-signature-of-cosmic-ray-increase-in-AD-774–775-from-tree-rings-in-Japan.pdf
https://cosmictusk.com/wp-content/uploads/COMET-ENCOUNTERS-AND-CARBON-14.pdf
https://cosmictusk.com/wp-content/uploads/Mysterious-abrupt-carbon-14-increase-in-coral-contributed-by-comet.pdf