EVERYDAY SCIENCE

Detailed explanation-1: -Diurnal motion is the daily motion of stars and other celestial bodies across the sky. This motion is due to the Earth’s rotation from west to east, which causes celestial bodies to have an apparent motion from east to west.

Detailed explanation-2: -Diurnal refers to daily. It is the motion of the sky due to Earth’s daily rotation. Stars and other celestial bodies appear to move from east to west. The axis of this apparent motion coincides with Earth’s axis of rotation.

Detailed explanation-3: -The day/night cycle-As you know, the sun rises in the east and sets in the west. This apparent motion of the sun across the sky is one example of diurnal motion (meaning daily motion).

Detailed explanation-4: -It is caused by Earth’s rotation around its axis, so almost every star appears to follow a circular arc path, called the diurnal circle, often depicted in star trail photography. The time for one complete rotation is 23 hours, 56 minutes, and 4.09 seconds – one sidereal day.

Detailed explanation-5: -The circular path that the celestial bodies take to complete the diurnal motion is called diurnal circle. The apparent motion of celestial bodies viewed from Earth is east to west.