The apparent change of position constellations over time provides evidence of Earth's revolution around the Sun due to the phenomenon known as stellar parallax. Stellar parallax occurs because of the Earth's motion in its orbit around the Sun. As the Earth moves in its orbit, the position of a star as observed from Earth appears to shift slightly. This apparent shift is a result of the change in the angle from which the star is viewed.

To understand how stellar parallax provides evidence of Earth's revolution around the Sun, consider the following:

1. Earth's Orbit: Earth orbits the Sun in an elliptical path throughout the year. As Earth moves along its orbit, its position relative to the stars changes.

2. Viewing Angle: The position of a star as observed from Earth depends on the viewing angle. When Earth is at one point in its orbit, a star may appear in a specific location in the night sky. However, as Earth moves in its orbit and changes position, the viewing angle of that star changes.

3. Apparent Shift: Due to the change in viewing angle, the position of the star as observed from Earth appears to shift slightly. This apparent shift in the star's position is called stellar parallax.

4. Measuring Parallax: Astronomers measure the parallax of stars to determine their distances from Earth. By observing a star from different points in Earth's orbit (six months apart), the angle of parallax can be calculated, which allows for the calculation of the star's distance.

5. Evidence of Revolution: The consistent observation of stellar parallax for different stars provides evidence that Earth is in motion around the Sun. As Earth moves in its orbit, the apparent shift in the positions of stars supports the heliocentric model of the solar system, which states that the Sun is at the center of our planetary system, and Earth and other planets revolve around it.

6. Annual Parallax: The complete cycle of stellar parallax, as observed from opposite points in Earth's orbit, is called annual parallax. The larger the annual parallax of a star, the closer the star is to Earth.

The precise measurement of stellar parallax has been crucial in accurately determining the distances to nearby stars and understanding the vastness and structure of our galaxy and the universe beyond.