Why do the stars and the constellations in the sky appear to change positions throughout the night and throughout the year?

Question

A. The location angle of the Earth's tilt relative to the stars and constellations remains the same throughout the year.

b. The Earth’s tilt changes its position relative to the stars and constellations as the Earth rotates and orbits.

C . The Earth’s tilt changes its position relative to the stars and constellations only because the Earth rotates around its axis.

Answer 1

The correct answer is B. The Earth’s tilt changes its position relative to the stars and constellations as the Earth rotates and orbits.

Here's an explanation:

1. Rotation: The Earth rotates on its axis once approximately every 24 hours. This rotation causes the stars and constellations to appear to move across the sky from east to west over the course of a night.

2. Orbit: As the Earth orbits the Sun over the course of a year, the night sky changes. Different constellations become visible in different seasons because of the Earth’s position in its orbit. For example, Orion is a winter constellation in the Northern Hemisphere, while Scorpius is more prominent in the summer.

3. Tilt of Earth's Axis: The tilt of the Earth's axis (about 23.5 degrees) affects the angle at which sunlight reaches the Earth and leads to seasonal variations but does not directly change the apparent motion of stars and constellations across the sky at night.

Thus, the combination of the Earth's rotation and its orbit around the Sun causes the observed changes in positions of stars and constellations throughout the night and the year.