How might interactions with the protoplanetary disk lead to changes in a planet's orbital inclination?

Jul 10, 2019 ... Rotation in the opposite direction of what is traditionally seen in the cosmos is called retrograde. The planets Venus and Uranus spin clockwise ... Mar 11, 2025 ... Retrograde motion happens when a celestial body appears, from our vantage point on Earth, to move backwards in the sky. It's an optical ... Retrograde motion of the outer planets starts and ends near the time of opposition, when a planet is opposite from the Sun in the sky. Short animation depicting the retrograde motion of planets in the night sky. Embed code