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Aspects in Astrology: The Five Major Configurations

Aspects in Astrology: The Five Major Configurations

In episode 323 astrologers Chris Brennan and Claire Moon discuss the five major aspects in astrology, and explain what they mean in a birth chart.

Aspects are geometrical configurations which denote different types of relationships between planets, and they are the primary means through which planets interact with each other in a chart.

The five major aspects, also sometimes known as the Ptolemaic aspects, are the conjunction, opposition, trine, square, and sextile.

During the course of the episode we give an introduction to the topic of aspects and then get into what each of the them mean symbolically.

This episode is available in both audio and video versions below.


Here are some timestamps for topics covered at different points in the episode:

00:00:00 Intro
00:00:59 New Introduction to Astrology course
00:01:52 Intro to aspects
00:04:13 Conjunction
00:09:49 Orbs
00:14:23 History of aspects
00:15:19 The 5 major aspects
00:21:01 Sign-based aspects
00:32:40 Aversions
00:37:13 Degree-based aspects
00:39:50 Applying vs. separating aspects
00:50:06 Orbs for aspects
00:51:34 The meaning of aspects
00:51:55 Porphyry on bearing testimony
00:54:56 Basic nature of the aspects
01:00:48 Hard aspects: square and opposition
01:05:55 Conjunctions
01:10:53 Oppositions
01:11:48 Houses and oppositions
01:19:56 Elemental qualities and oppositions
01:20:33 Full Moon and New Moon
01:30:49 Squares
01:33:30 Left side and right side aspects
01:36:44 Interpreting squares
01:44:00 Trines
01:49:39 Sextiles
01:54:02 Aspects in the birth chart
01:54:30 Aspects from transits to the birth chart
01:55:41 George Lucas natal chart
02:03:50 Aspects in synastry
02:08:57 Aspects in mundane astrology
02:15:24 Archetypal Explorer
02:18:40 Aspect patterns
02:25:38 Introduction to Astrology course launch in November
02:25:50 Hellenistic Astrology book
02:26:22 Hellenistic Astrology course
02:26:38 Claire’s offerings and website
02:27:49 Concluding remarks

Watch the Video Version of This Episode on Aspects

Watch the video version of our discussion on the major aspects here:


A full transcript of this episode is available: Episode 323 transcript

Listen to the Audio Version of This Episode

You can either play the audio version of this episode of the podcast directly from the website or download it as an MP3 to your device by using the buttons below:

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  • Thank you for this wonderful well explained podcast on the aspects. I looked everywhere at the beginning of the year for information on aspects as I struggled to understand it as a 1st year traditional astrology student. This was a good revision before exams and I learnt 1 or 2 things we haven’t touched on yet. Thank you for the podcast that is a library of information!

  • Hi Chris! Just responding to the question of what to call it when two planets are involved in a mirror aspect with each other, i.e., transiting Mars conjunct Venus and transiting Venus conjunct Mars. I see that astrologer Judith Hill calls this a “doubling”. She discusses doublings briefly in her book “The Lunar Nodes: Your Key to Excellent Chart Interpretation” on pp. 38-39. I hope this makes your short list! I really enjoy your podcasts! Keep up the good work!