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Although planets resemble stars as one observes the night sky, the planets change position from night to night in relation to the stars. Like the sun, the planets appear to rise in the east and set in the west. When a planet travels westward in relation to the stars, its motion is called retrograde." Based on the preceding paragraph, what does the word retrograde mean?

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HowellK20

When the planet nearest to the Sun is in retrograde, it appears to move backwards (east to west rather than west to east) across the sky. Earth's orbit isn't identical to that of any other planet in the solar system, which means that all the planets appear to move backwards at varying points in time. Hope this helps! =^-^=

MrsWhitfield2018

Based on the paragraph above, retrograde can be defined as “the western movement of a planet in relation to the stars”.

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