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  2. Apparent retrograde motion - Wikipedia

    en.wikipedia.org/wiki/Apparent_retrograde_motion

    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 ...

  3. Retrograde and prograde motion - Wikipedia

    en.wikipedia.org/wiki/Retrograde_and_prograde_motion

    All eight planets in the Solar System orbit the Sun in the direction of the Sun's rotation, which is counterclockwise when viewed from above the Sun's north pole. Six of the planets also rotate about their axis in this same direction. The exceptions – the planets with retrograde rotation – are Venus and Uranus.

  4. 5 planets are about to be retrograde at the same time. What ...

    www.aol.com/news/5-planets-retrograde-same-time...

    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.

  5. Deferent and epicycle - Wikipedia

    en.wikipedia.org/wiki/Deferent_and_epicycle

    Each night the planet appeared to lag a little behind the stars, in what is called prograde motion. Near opposition, the planet would appear to reverse and move through the night sky faster than the stars for a time in retrograde motion before reversing again and resuming prograde. Epicyclic theory, in part, sought to explain this behavior.

  6. There are no planets in retrograde until April. Why ... - AOL

    www.aol.com/news/no-planets-retrograde-until...

    The feeling won't last. This summer, five planets in the sky will be retrograde at the same time: Mercury, Saturn, Jupiter, Pluto, and Neptune. Make the most of the months ahead so you're prepared ...

  7. A Guide To What Retrograde Actually Means & How Each Planet’s ...

    www.aol.com/lifestyle/guide-retrograde-actually...

    No, Mercury isn't the only planet that goes retrograde. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in. Mail. 24/7 ...

  8. A Complete Guide to Every Mercury Retrograde Happening ... - AOL

    www.aol.com/lifestyle/complete-guide-every...

    Mercury retrograde refers to the period of time when Mercury moves slower than the Earth around the sun – causing it to appear to spin backward in the night sky. Retrograde motion is an apparent ...

  9. Astronomy on Mercury - Wikipedia

    en.wikipedia.org/wiki/Astronomy_on_Mercury

    Astronomy on Mercury is the sky as viewed from the planet Mercury. Because Mercury only has a thin atmosphere, ... making the Sun appear to go retrograde. Four days ...