Month: July 2025

ECLIPTIC
The apparent path of the Sun across the sky.

ZODIAC
A band of twelve constellations along the Sun’s apparent path.

GNOMON
The part of a sundial that casts a shadow.

SUNDIAL
A device that tells time based on the position of the Sun’s shadow.

SOLAR CALENDAR
A calendar system based on the Earth’s orbit around the Sun.

LUNAR CALENDAR
A calendar system based on the phases of the Moon.

NEWTON’S LAWS OF MOTION
Three fundamental laws that describe the relationship between the motion of an object and the forces acting on it.

KEPLER’S LAWS
Three laws describing planetary motion around the Sun.

COSMOLOGY
The study of the origins, evolution, and structure of the universe.