© Wikimedia CommonsJustinian's Raging Bulls.
In a wonderful YouTube video Dr. Ruth Dwyer examines the Ravenna Mosaics and discovers the mosaics clearly depict "debris from space impacting the Earth".The extreme weather events of 535 - 536 were the most severe and protracted short-term episodes of cooling in the Northern Hemisphere in the last 2,000 years.
The event is thought to have been caused by an extensive atmospheric dust veil, possibly resulting from a large volcanic eruption in the tropics, and/or debris from space impacting the Earth.
Its effects were widespread, causing unseasonal weather, crop failures, and famines worldwide.
https://en.wikipedia.org/wiki/Extreme_weather_events_of_535%E2%80%93536The Plague of Justinian (541 - 542) was a pandemic that afflicted the Eastern Roman (Byzantine) Empire, especially its capital Constantinople, the Sassanid Empire, and port cities around the entire Mediterranean Sea.
One of the greatest plagues in history, this devastating pandemic resulted in the deaths of an estimated 25 million (initial outbreak) to 50 million (two centuries of recurrence) people.
Recent investigations relate this severe plague epidemic to extreme weather events of 535 - 536 considered as an example of volcanic winter.
https://en.wikipedia.org/wiki/Plague_of_Justinian
Comment: See also: Huge fireball lights up night sky over Phoenix, Arizona - Residents stunned as meteor explodes, shaking homes