Mercury retrograde

Astronomical origin

Retrogradation is an optical phenomenon, not a real one. No planet spins backwards: planets always move in the same direction around the Sun. But because Earth and the other planets advance at different speeds, there are moments when, seen from Earth, they appear to displace backwards against the background of the stars. It is like overtaking a car on the highway: for a moment the car you overtake seems to move backwards.

Mercury, being the fastest planet, has frequent and short retrogradations: three or four a year, of about 3 weeks each. Plus all outer planets (Mars, Jupiter, Saturn, Uranus, Neptune, Pluto) have their own longer retrogradations. But popular culture has made Mercury retrograde the most famous of all.

What is attributed to it

In traditional astrology, Mercury rules communication, short journeys, contracts and the mind. When it is retrograde, those domains enter a review phase: what you send by message gets misinterpreted, plans get complicated, electronics fail, contract signing gets postponed, journeys have setbacks.

What retrogradation does favour: everything that begins with "re-". Reflect, review, reorganise, rewrite, reunite, remember, resume what was abandoned. It is a good period to clean your inbox, review old contracts, reconnect with lost friends. Retrogradation is collective mental introspection.

Traditional recommendations

What to avoid: signing important contracts, buying new technology, starting big journeys, launching new products or websites, having difficult conversations if you can postpone them. What to do: review everything twice before sending, be patient with misunderstandings, make backups, call that person you lost touch with. Science does not endorse the effect, but conscious attention to the period usually reduces real errors — perhaps just because one is more alert.