Are there any educational websites or apps that explain retrograde motion in an accessible way?

This forward and backward motion of Mars and the outer planets in the sky is known as retrograde motion. In this paper, the conditions for retrograde motion of vacuum arc cathode spot affected by the initial pressure was elucidated. Retrograde motion is an illusion. Planets do not actually change direction in their orbits. The illusion arises from the combined motion of Earth and the ... Sep 30, 2016 ... A prograde motion of a planet means it moves steadily east of any given star when the position of the two are compared during a sequence of evenings. Mar 13, 2025 ... Public servant, wrote Product Management for UX People, curator of Design in Product, songwriter in residence for At Swim-Two-Birds. Jan 22, 2020 ... Once the Earth reaches its closest point with another planet -- called opposition -- the other planet goes into what's called "retrograde." Sep 30, 2020 ... An Archive of Our Own, a project of the Organization for Transformative Works. Retrograde motion is an interesting phenomenon observed in the sky, especially with planets. Normally, planets move across the sky from west to east ... Short animation depicting the retrograde motion of planets in the night sky. Embed code