Here's why:
* All planets in our solar system orbit the Sun in the same direction. This is a consequence of how the solar system formed from a spinning disk of gas and dust.
* The orbits are also generally in the same plane. This is why we see planets in the same general region of the sky.
* Planets do not "turn" in their orbits. They follow a roughly elliptical path, with the Sun at one focus.
While there might be slight variations in orbital speed, the overall direction of movement remains consistent.
