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  2. Transit of Mercury - Wikipedia

    en.wikipedia.org/wiki/Transit_of_Mercury

    The transit of Mercury on May 9, 2016. Mercury is visible to the lower left of center. A sun spot is visible above center. Mercury transiting the Sun as viewed by the rover Curiosity on Mars (June 3, 2014). [1] A transit of Mercury across the Sun takes place when the planet Mercury passes directly between the Sun and a superior planet.

  3. Apparent retrograde motion - Wikipedia

    en.wikipedia.org/wiki/Apparent_retrograde_motion

    An animation explaining why the planet Mercury may appear to move "backwards", or retrograde across Earth's sky. Apparent retrograde motion is the apparent motion of a planet in a direction opposite to that of other bodies within its system, as observed from a particular vantage point.

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

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

    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.

  5. Astronomy on Mercury - Wikipedia

    en.wikipedia.org/wiki/Astronomy_on_Mercury

    Astronomy on Mercury is the sky as viewed from the planet Mercury. ... During a Mercurian day, the Sun would be seen rising in the east, move up for a while, stop in ...

  6. What Does Mercury in Retrograde Mean? - AOL

    www.aol.com/means-talk-mercury-retrograde-why...

    Mercury is in retrograde when it appears to go backward in its orbit. According to astrologer Emily Ridout, that means complications surrounding communication and travel. According to Ridout ...

  7. Retrograde and prograde motion - Wikipedia

    en.wikipedia.org/wiki/Retrograde_and_prograde_motion

    Retrograde orbit: the satellite (red) orbits in the direction opposite to the rotation of its primary (blue/black) 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).

  8. Here's When Mercury Will Be In Retrograde In 2024, And What ...

    www.aol.com/heres-mercury-retrograde-2024-expect...

    “The Mercury retrograde period is akin to a cosmic timeout,” explains Wang. “It’s the universe’s way of saying, ‘Slow down, reflect, reassess.’” When does Mercury go retrograde in ...

  9. Deferent and epicycle - Wikipedia

    en.wikipedia.org/wiki/Deferent_and_epicycle

    Furthermore, if they were scaled so that the Earth's orbit was the same in all of them, the ordering of the planets we recognize today easily followed from the math. Mercury orbited closest to the Sun and the rest of the planets fell into place in order outward, arranged in distance by their periods of revolution. [12]: 54