Comets

Comet

A celestial body composed of ice and dust that, when passing close to the sun, produces a visible atmosphere or tail.

Portent

An indication or warning that something momentous or calamitous is likely to happen.

Supernatural signs

Signs interpreted as messages from the divine, often linked to significant events.

Random unpredictability

The lack of predictability in events, often leading to unexpected occurrences.

Star of Bethlehem

A celestial event, often interpreted as a comet, linked to the birth of Jesus.

Halley's Comet

A famous comet expected to return every 75-76 years, known for its visibility during historical events.

Edmund Halley

An astronomer known for predicting the return of Halley's Comet in the 18th century.

Deterministic nature of gravity

The predictable and calculable behavior of gravitational forces as established by Newtonian physics.

Caesar's comet

A comet sighted after Julius Caesar's death, interpreted as a sign that he had become a god.

Battle of Hastings

A pivotal battle in 1066 CE where Halley's Comet was viewed as an omen for William the Conqueror.