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  2. 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.

  3. Apparent retrograde motion - Wikipedia

    en.wikipedia.org/wiki/Apparent_retrograde_motion

    Though all stars and planets appear to move from east to west on a nightly basis in response to the rotation of Earth, the outer planets generally drift slowly eastward relative to the stars. Asteroids and Kuiper Belt objects (including Pluto) exhibit apparent retrograde motion. This motion is normal for the planets, and so is considered direct ...

  4. Triton (moon) - Wikipedia

    en.wikipedia.org/wiki/Triton_(moon)

    Triton is the largest natural satellite of the planet Neptune. It is the only moon of Neptune massive enough to be rounded under its own gravity and hosts a thin, hazy atmosphere. Triton orbits Neptune in a retrograde orbit—revolving in the opposite direction to the parent planet's rotation—the only large moon in the Solar System to do so.

  5. Strange planet with a backward, cucumber-shape orbit is ... - AOL

    www.aol.com/strange-planet-backward-cucumber...

    Science & Tech . Sports. Weather. 24/7 ... The research team also discovered that the planet is orbiting backward or moving in the opposite direction when compared with the rotation of its star ...

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

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

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  7. 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.

  8. Mercury Is in Retrograde Again — Here's What That Means - AOL

    www.aol.com/news/mercury-retrograde-again-heres...

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  9. Solar System - Wikipedia

    en.wikipedia.org/wiki/Solar_System

    Most of the larger moons orbit their planets in prograde direction, matching the direction of planetary rotation; Neptune's moon Triton is the largest to orbit in the opposite, retrograde manner. [50] Most larger objects rotate around their own axes in the prograde direction relative to their orbit, though the rotation of Venus is retrograde. [51]