enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Retrograde and prograde motion - Wikipedia

   en.wikipedia.org/wiki/Retrograde_and_prograde_motion

   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). It may also describe other motions such as precession or nutation of an object's rotational axis .

3. Apparent retrograde motion - Wikipedia

   en.wikipedia.org/wiki/Apparent_retrograde_motion

   The retrograde motion of a hypothetical extremely distant (and nearly non-moving) planet would take place during a half-year, with the planet's apparent yearly motion being reduced to a parallax ellipse. The center of the retrograde motion occurs at the planet's opposition which is when the planet is exactly opposite the Sun.

4. Deferent and epicycle - Wikipedia

   en.wikipedia.org/wiki/Deferent_and_epicycle

   The Sun-centered positions displayed a cyclical motion with respect to time but without retrograde loops in the case of the outer planets. [dubious – discuss] In principle, the heliocentric motion was simpler but with new subtleties due to the yet-to-be-discovered elliptical shape of the orbits. Another complication was caused by a problem ...

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

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

   Planets moving in direct motion, aka non-retrograde planets, act in a very predictable way without much fuss or fanfare. Most of the time, planets move in this forward motion, and things carry on ...

6. Satellite ground track - Wikipedia

   en.wikipedia.org/wiki/Satellite_ground_track

   This is called "apparent direct" motion. A satellite in a direct orbit with an orbital period greater than one day will tend to move from east to west along its ground track, in what is called "apparent retrograde" motion. This effect occurs because the satellite orbits more slowly than the speed at which the Earth rotates beneath it.

7. Mercury Is In Retrograde: These Are The Most Impacted ... - AOL

   www.aol.com/zodiacs-most-impacted-mercury...

   Mercury retrograde is an astrological phenomenon where the planet Mercury appears to move backward in its orbit from Earth’s perspective. ... when Mercury goes into retrograde motion, any of ...

8. 5 planets are about to be retrograde at the same time. What ...

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

   Here are the dates for Mercury retrograde, Venus retrograde, Saturn retrograde, Neptune retrograde, Pluto retrograde and more. ... When in forward motion, Saturn teaches us lessons and motivates ...

9. File:The astronomical explanation for Mercury retrograde.webm

   en.wikipedia.org/wiki/File:The_astronomical...

   English: An astronomical explanation for Mercury's retrograde motion: the inner planet appears to retrace its steps a few times per year. Every planet does this, every year. In fact, there is a planet in retrograde for 75% of 2020.