Retrograde Rotation - rowan.k12.ky.us

Most of them also rotate in an eastward direction, but three of them (Venus, Uranus and Pluto) rotate to the west. As a result, we say that they have a retrograde rotation. This is indicated, in discussion the rotation period of a planet, either by placing an "R" after the period, or a minus sign in front of it. ................
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