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Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is, the central object (right figure). It may also describe other motions such as precession or nutation of an object's rotational axis .
The term retrograde is from the Latin word retrogradus – "backward-step", the affix retro-meaning "backwards" and gradus "step". Retrograde is most commonly an adjective used to describe the path of a planet as it travels through the night sky, with respect to the zodiac, stars, and other bodies of the celestial canopy. In this context, the ...
It is defined as the apparent magnitude the star would show if it were located at a distance of 10 parsecs, or 32.6 light-years. accretion disk A roughly circular mass of diffuse material in orbit around a central object, such as a star or black hole. The material is acquired from a source external to the central object, and friction causes it ...
Retrograde has a similar effect on other planetary bodies. The transit acts as a type of handicap, impeding the way they shine. Retrogrades occur when a planet appears to move backwards in its orbit.
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Prepare for the next major planetary slowdown.
Five planets are going to be retrograde in the summer of 2024. Here are the dates for Mercury retrograde, Venus retrograde, Saturn retrograde, Neptune retrograde, Pluto retrograde and more.
Most modern astrologers consider the retrograde movement of a planet to be malefic, indicative of stress or difficulty. For example, the retrograde movement of Mercury is commonly thought to signify difficulties in communication, such as post or emails going astray, verbal misunderstandings, and travel delays and frustrations.