Directly across from the 3rd house ruled by Gemini, you will fing the 9th house ruled by Sagittarius. Gemini is considered the lower mind, concerned with the day to day tasks wherer as the 9th house in astrology is naturally ruled by Sagittarius, our higher mind; the mind that governs truth, higher education, religion and philosophy. The 9th house also rules far off countries and individuals from far off places.
The Sun in the 9th house person is considered to be born lucky, the 9th house naturally ruled by Sagittarius ruled by Jupiter planet of luck the Sun placed in the 9th house may take on a Sagittarius vibe, a lover of law, freedom and long distance travel. Free spirited a lifelong traveler, mental and physical journeys to exotic places is to be expected. Higher learning via education or trips is very likely
The Moon in the 9th house may emotionally roam the world, connecting with people from other cultures. Traveling often, professions you may prefer are anything involving teaching, law and religion. In committed partnerships you need someone you can travel with and who offers personal freedom. May indicate taking up residence far from your place of birth
Mercury in the 9th house indicates you enjoy philosophizing, sharing ideas, communicating about your beliefs however these beliefs may fluctuate and change often, Mercury is ruled by Gemini and Gemini is the most scattered sign in the zodiac
Venus in the 9th house gives a love and admiration for other cultures; you may find love with someone from a completely different background. You very well may find beauty in all the places you travel to and read about.
Mars in the 9th house you aggressively defend your views on the world; you want to fight for your truth and may quite possibly aggressively pursue a degree in higher education. Watch out for legal concerns or people attacking you in legal matters, there is some connection between mars being god of war and the 9th house being legal matters
Jupiter in the 9th house YIPPY! Jupiter is at home in the 9th house you have an optimistic view of the world and with time your mind will expand and grow. Very likely you have a love of law and teaching as you wish to share your knowledge with the world. Good lucks via trips, higher education but more so indicates a cheerful disposition
Saturn in the 9th house indicates you have a very conservative view of the world, you may keep the views and values bestowed to you by your male parental role or the views you have always grown up with. Your mind does however have an ability toward concentration, be prepared to experience delays or setbacks in terms of long distance travel, also try to remain open minded and beware that your way is not the only way or right way of thinking
Uranus in the 9th house indicates an extremely open mind. One of my favorite placements flashes of genius, journeys off the beaten path, acceptance of others philosophical views. Uranus can be unexpected so you may experience sudden and unexpected changes in thought, sudden trips to far off places and sudden changes in higher education
Neptune in the 9th house can have the markings of a born again Christian or someone that may be susceptible toward joining fanatical groups in the hopes of attaining enlightenment or becoming one with society. You may not be entirely sure of what you believe and you may not be entirely sure on what you wish to study, one thing is certain you will probably take a significant trip on water at some point in your life.
Pluto in the 9th house searches for deeper meaning in life via travel and higher education, they may become obsessed with discovering why we are here, and when teach a subject this is no superficial placement you want to get to the heart of the matter.