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Planetary Aspects: An Astrological Guide to Managing Your T-Square

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A classic back in print, Planetary Aspects is one that every astrologer would choose on their shortlist for their own library and a great tool for all levels of astrological practice.

This comprehensive work focuses on the most challenging dynamics of the birth chart. Originally published in 1987, it is recognized as a classic of modern astrology, and was the most highly rated book in the Astrology Book Club's nationwide survey. The author presents powerful techniques for understanding and resolving the conflicts of planetary aspects, emphasizing the potential for growth and achievement involved in stressful aspects.

The central theme of this book is the T-square configuration--a chart pattern that occurs periodically for everyone by transit, progression, or chart comparison. The T-square is a combination of planets, signs, and houses that suggests a pronounced strength or emphasis, as well as imbalance and deficiency. Planetary An Astrological Guide to Managing Your T-Square is a discussion of the conflicts and harmonies of this important aspect, and a guide to understanding the crucial periods and challenges it presents.

240 pages, Paperback

First published March 1, 1987

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About the author

Tracy Marks

20 books36 followers

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5 stars
18 (39%)
4 stars
14 (30%)
3 stars
10 (21%)
2 stars
4 (8%)
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Displaying 1 - 7 of 7 reviews
Profile Image for DeanJean.
162 reviews12 followers
November 19, 2018
The sections regarding weak elements, and how to engage in inner dialogue with your T-square through art or writing I found quite illuminating, although the parts about minor aspects acting as release points for the pent-up energy of the T-square was too much for me. Giving it 3 stars because I was looking to read more about the theoretical manifestations of T-squares in detail, rather than learning about coping strategies.

As someone who has Libra planets as the focal point of a T-square, I was rather amused to see Tracy Marks' Sun and Neptune in Libra, and the stellium in Virgo. My focal planets sit in the 12th, with Virgo on the cusp...
Profile Image for Jonathan.
16 reviews14 followers
September 3, 2012
This book turned out to be entirely on T-Squares (basically) and not an exhaustive study of planetary aspects - even all "difficult" ones. It had some good information but probably nothing you could not find elsewhere.

*Spanish translation
Profile Image for Eerika.
120 reviews
April 29, 2021
My favorite chapter is the Becoming Whole. It is about her own chart and different planetary personalities and their interactions and conflicts. I'm not a serious astrology student and other chapters were a bit too detailed for me. I read astrology books for personal insights and not so much to learn read charts, not even my own chart.
Author 1 book
April 15, 2025
Tracy Marks must have renamed this book a million times, but the content of the book is impeccable. I took the book because I have problematic aspects in my birth chart and the book talks about creative ways to work with the energy. I especially love how she uses the birth chart in creative writing and this sparked off the idea that I've written my book about! Truly worth the read!
Profile Image for Sare.
28 reviews
July 3, 2024
Elimdeki en sağlam kaynaklardan biri… manyak iyi kafa açıyor bayıldım
Profile Image for Zlatina Dimova.
58 reviews3 followers
July 17, 2024
The main theme of the book is T-square aspect - the challenges, how could you balance the opposite energies, how to integrate them and how to grow up.
Displaying 1 - 7 of 7 reviews

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