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Retrograde planets: what it physically is
The commonest misunderstanding in astrology has a purely astronomical answer — and one simple enough to be worth knowing even if astrology leaves you cold.
The planet does not turn around
First, plainly: no planet starts flying the other way. They all move around the Sun in one direction the whole time, and nothing in the solar system changes that.
It goes backwards only in appearance — against the stars, seen from Earth. The cause is the same one that makes a train on the next track seem to roll backwards while yours overtakes it. The Earth moves faster along its orbit than the outer planets and periodically overtakes them; at the moment of overtaking, the planet slides backwards across the sky.
For Mercury and Venus it is the same thing in reverse: they are inside the Earth’s orbit and overtake us.
Here is a real loop
One full cycle of Mars, computed by the same code as your chart:
- 150.4°November 27, 2026 — moving forward
- 160.4°January 11, 2027 — stations
- 150.5°February 20, 2027 — moving backwards
- 140.9°April 1, 2027 — stations again
- 150.7°May 16, 2027 — forward again
Mars, 81 days. Look at the degrees: it passes the same point of the sky three times — forward, back, and forward again.
Look at the degrees rather than the dates. Mars moves forward, stops, rolls back almost twenty degrees, stops again and moves forward. It passes the same point of the sky three times. That is the loop, and it is visible through a telescope or even binoculars if you have the patience for a few months.
How often it happens
And here is the surprise almost nobody prints:
| Planet | How often | Lasts | Of the time |
|---|---|---|---|
| Mercury | 3× a year | 22 days | 19% |
| Venus | every 23 mo | 42 days | 7% |
| Mars | every 30 mo | 73 days | 9% |
| Jupiter | every 14 mo | 121 days | 30% |
| Saturn | every 13 mo | 138 days | 36% |
| Uranus | every 13 mo | 153 days | 41% |
| Neptune | every 13 mo | 159 days | 44% |
| Pluto | every 13 mo | 161 days | 44% |
Measured from the site’s ephemerides over 2000–2030. The last column is the point: for the outer planets, retrograde motion is not an event but nearly half of the time.
Look at the last column. For Pluto and Neptune it is nearly half — so for most of a lifetime they appear to be going backwards. Uranus and Saturn are not far behind. That is simply a consequence of geometry: the slower the planet, the more of the year the Earth spends overtaking it.
The practical upshot: for the outer planets “the planet is retrograde” is not an event but an ordinary state. Talking about retrograde Mercury, Venus and Mars makes sense, because there it really is a distinct stretch; for Pluto it is close to background.
How the site computes it
Not separately at all. Retrograde motion here is not a table or a list of dates: the site simply looks at where the planet’s longitude moved over a day. Smaller than before means the planet is going backwards. That is one comparison, and it is always right, because it comes from the same position calculation.
So nowhere on this site is there a “retrograde until the such-and-such” taken from someone else’s data: if a date is named, it was computed.
What is retrograde right now
Right now, at the moment you opened this page:
Computed from ·
- ☉ ♎Sun at 2° in Libra
- ☉ ☍ ♆opposition to Neptune, orb 0.9°
- ℞Retrograde: Saturn in Aries, Uranus in Gemini, Neptune in Aries, Pluto in Aquarius
- ☽ ♓Moon at 13° in Pisces → into Aries on September 26, 2026
Every line has a source — a body, an angle, a date. Check it against any astronomical reference.
And what the tradition makes of it
Here the second half begins — interpretation, and it is not demonstrated. The tradition reads a retrograde stretch as a time when the planet’s theme comes back for review: not something new, but something that already happened and stayed unfinished.
The loudest case is Mercury retrograde, roughly three times a year for three weeks. So many everyday promises are attached to it (“sign no contracts”, “your devices will break”) that it is worth saying plainly: there is no evidence for any of it. We write where Mercury is and whether it is moving backwards; predicting a broken fridge from that is not something we undertake.
Being born under a retrograde planet
The question people ask most, and the answer is reassuring: it is ordinary. It follows straight from the table above — whatever share of the time a planet is retrograde, that is the share of people who have it retrograde in their chart. For Pluto that is close to every second person. The average chart has two or three retrograde bodies.
The tradition reads a natal retrograde not as a fault but as a turn inward: the planet’s theme works towards the self rather than outwards. A retrograde Mercury is someone who thinks first and speaks second. A retrograde Venus is someone slower to admit what they like.
And once more: that is a description, not a mechanism. The planet was not doing anything to you at that moment — it was simply on the far side of the Earth’s path.
Why this is worth knowing at all
Because it is the shortest way to test an astrology site. Retrograde motion is a checkable fact: you can verify it against any astronomical source in a minute. If a site gets this wrong, it is computing nothing; if it gets it right, at least its first half is honest.
Retrograde planets in your own chart are marked too — ℞ in the reading. Being born under a retrograde planet is ordinary: the average chart has two or three.