Why do stars appear in different locations throughout the night and year and what role do the constellations play in the night sky?
Respected Sir
Rk Naresh
Stars appear in different locations throughout the night and year due to the Earth's rotation on its axis and its orbit around the Sun, while constellations serve as recognizable patterns of stars that help us navigate and identify objects in the night sky. Let's explore these concepts in more detail:
The constellations you can see at night depend on the time of year. Earth orbits around the Sun once each year. Our view into space through the night sky changes as we orbit. So, the night sky looks slightly different each night because Earth is in a different spot in its orbit. As the Earth revolves around the Sun, the patterns of the stars appear to move. The Earth completes its orbit around the Sun or its revolution in about 365 day’s total. As the Earth revolves around the Sun, the position of the Earth changes and this creates the different views of the night sky. Since the Earth completes one orbit around the Sun every year, it returns to the same position after 365.256 days, which is one sidereal year. The stars would appear in almost the same position in the sky after one sidereal year. The night sky changes throughout the year because of Earth's changing position in its orbit around the sun. In some cases the constellations may have had ceremonial or religious significance. In other cases, the star groupings helped to mark the passage of time between planting and harvesting. There are 48 “ancient” constellations and they are the brightest groupings of stars those observed easily by the unaided eye. This motion is due to the Earth's rotation. As the spin of the Earth carries us eastward at almost one thousand miles per hour, we see stars rising in the East, passing overhead, and setting in the West. The Sun, Moon, and planets appear to move across the sky much like the stars.