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  2. Retrograde and prograde motion - Wikipedia

    en.wikipedia.org/wiki/Retrograde_and_prograde_motion

    Retrograde motion, or retrogression, within the Earth's atmosphere is seen in weather systems whose motion is opposite the general regional direction of airflow, i.e. from east to west against the westerlies or from west to east through the trade wind easterlies.

  3. 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 ...

  4. Satellite ground track - Wikipedia

    en.wikipedia.org/wiki/Satellite_ground_track

    A satellite with an orbital inclination between 90° and 180° (or, equivalently, between 0° and −90°) is said to be in a retrograde orbit. [note 2] A satellite in a direct orbit with an orbital period less than one day will tend to move from west to east along its ground track. This is called "apparent direct" motion.

  5. A Guide To What Retrograde Actually Means & How Each ... - AOL

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

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  6. Earth's rotation - Wikipedia

    en.wikipedia.org/wiki/Earth's_rotation

    The average of the true solar day during the course of an entire year is the mean solar day, which contains 86,400 mean solar seconds. Currently, each of these seconds is slightly longer than an SI second because Earth's mean solar day is now slightly longer than it was during the 19th century due to tidal friction. The average length of the ...

  7. 5 planets are about to be retrograde at the same time. What ...

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

    "Retrograde" is a term used to describe when a planet's orbit appears to slow. Technically, they are optical illusions, but we astrologers believe they have an effect down here on Earth.

  8. Opposition (astronomy) - Wikipedia

    en.wikipedia.org/wiki/Opposition_(astronomy)

    in apparent retrograde motion [2] visible almost all night – rising around sunset, culminating around midnight, and setting around sunrise [3] at the point in its orbit where it is roughly closest to Earth, making it appear larger and brighter [4] nearly completely sunlit; the planet shows a full phase, analogous to a full moon [5]

  9. 6 Planets Are In Retrograde Now, Including Mercury: Meaning - AOL

    www.aol.com/6-planets-retrograde-now-including...

    The planets Pluto, Neptune, Uranus, Saturn, Jupiter, and Mercury are in retrograde right now. here's what retrograde means and how it will affect your zodiac sign. 6 Planets Are In Retrograde Now ...