3rd House in Astrology


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What is important is to keep learning, to enjoy the challenge, and to tolerate ambiguity. In the end there are no certain answers.

Martin Horner

President of Radcliffe College
Sphere Communication
Ruler Gemini
Planet Mercury
Element Air
Mode Mutable
Polarity Yang (Positive, Male)
Colour Yellow
Keywords Communication, siblings, learning, immediate environment, neighbours

3rd House

The 3rd house in astrology, is when a child begins to communicate and question the ideas and concepts and workings of the world. At around three years old a child seems to ask the question 'Why ?' to their parents to just about everything they see and experience. They are taking in the knowledge of the world around them which they will need when they are older.


The 3rd house in an air house and the element of air is to do with ideas. The 3rd house is naturally ruled by and parallels the sign of Gemini. This is a sign that is concerned with knowledge and the transfer of ideas. To a Gemini, everythying is endlessly fascinating. Why do people do that? What does this mean? How does this work? These are all ideas and questions that relate to the 3rd house and Gemini.


Around this time, the child begins Nursery and starts to formally begin to learn, up until now, the child was just free to emerge and form his identity. The 3rd house, is therefore also about the early schooling process and the acquisition of knowledge.


Opposite House

The 3rd house is about all forms of local communication. It's opposite house, the 9th house, is more concerned with long distance travel and global understanding of concepts and ideas. The 3rd house, however, is more concerned with it's immediate environment. Brothers and sisters, relatives and neighbours and short journeys, schooling and daily life all come under the jurisdiction of the 3rd house.


Planets in the 3rd house

Planets in the 3rd house in our natal chart, show us how we communicate with our immediate environment. They show us what our attitude and abilities towards acquiring knowledge are.


Mercury in the 3rd house

With Mercury in the 3rd house in a natal chart, the person will be a great communicator and will probably never stop talking and asking questions, reading books and hankering after more and more knowledge.


Saturn in the 3rd house

With Saturn in the 3rd house in a natal chart, a persons early schooling may be slow and they may find communication difficult. They may even have a stutter or a lisp or only talk later than all the other children. Ultimately though, they may be an authority in communicating ideas but only after much effort and overcoming of hardship and difficulties.