This term refers to the point where a planet changes direction to go from direct to retrograde, or from retrograde to direct. Similar to the way a pendulum swings one way, then slows down and pauses (becomes stationary or still briefly) before it changes direction, a planetary station is when a planet has slowed down and seems to become still, before it resumes its motion in the opposite direction. When a planet pauses and changes direction like this, it is called a Planetary Station. See also: Direct, Retrograde, Shadow (planetary). See also the article series on Retrograde Planets, including an article specifically on the Stations.