Aspects in astrology

☌ Conjunction (0°)

• merging
• intensification
• focus
• shared expression

A conjunction (0°) occurs when two planets or points sit at the same degree of the zodiac or at very close degrees. It is the most powerful aspect in astrology, because the energies of the two planets work as a single expression rather than separately. A conjunction is not considered harmonious or challenging in itself; the outcome depends on the nature of the planets that merge. A Venus-Jupiter conjunction brings a flowing, generous theme, while a Mars-Saturn conjunction creates a restrained, intense and disciplined energy. This is why the conjunction is classified as a «neutral» aspect. The orb is about 8 degrees, and it can be widened for conjunctions involving the Sun and the Moon.

Two planets in conjunction are usually interpreted together in the chart rather than separately. A Sun-Moon conjunction describes people born at a new moon, a makeup in which the core self and the emotions coincide. When the faster planet is moving toward the slower one, it is called an «applying» conjunction; when it is moving away, it is a «separating» conjunction. Applying aspects are often felt more strongly. When three or more planets gather in the same sign or house, this is called a «stellium», and that area becomes the main theme of the chart. The effect of a conjunction is interpreted as difficulty separating the energies of the planets involved and an intense focus on that theme.

⚺ Semi-sextile (30°)

• subtle connection
• incompatibility
• adjustment
• minor tension

The semi-sextile (30°) is the aspect formed when two planets sit in adjacent signs, roughly 30 degrees apart. Its orb is about 2 degrees, and astrology counts it among the secondary (minor) aspects. Adjacent signs share no common ground in element, modality or polarity, so the semi-sextile describes a subtle connection in which the two planets speak different languages and never fully understand each other. The aspect is generally considered «neutral» or mildly challenging.

The effect of a semi-sextile is usually subtle and indirect. People often don't consciously notice this aspect; small adjustments are needed to bring the two planets' contact into harmony. For example, if the Sun and Moon are semi-sextile, identity and emotional needs don't face the same direction, yet there is no sharp conflict either. This aspect is never placed at the center of an interpretation on its own. It is treated as a supporting detail alongside the major aspects (conjunction, square, trine, opposition). Because the orb is so narrow, only semi-sextiles that are close in degree carry meaning.

⚹ Sextile (60°)

• opportunity
• cooperation
• flexibility
• support

The sextile (60°) is the aspect formed when two planets sit roughly 60 degrees apart, with two signs between them. Its orb is about 5 degrees. Planets in sextile are usually in compatible elements: fire with air, or earth with water. This elemental compatibility means the two planets can support each other and work together. The sextile is classed as a «harmonious» aspect, but unlike the trine it does not flow on its own: it offers opportunity, yet making use of that opportunity takes effort.

In a birth chart, the sextile shows the talents a person can develop and the doors of opportunity open to them. For example, if Mercury and Mars are in sextile, quick thinking and taking action support each other; whether that potential is put to use, however, depends on the person's choices. Astrologers often call the sextile the «aspect of opportunity». It feels lighter than the trine but more active, because it calls for a conscious step. The supportive connections that balance the tension created by squares and oppositions often come from sextiles, which is why the presence of a sextile in a chart is a frequently interpreted detail.

□ Square (90°)

• tension
• effort
• conflict
• growth

The square (90°) is the aspect formed when two planets are roughly 90 degrees apart, with an orb of about 7 degrees. Planets in square usually sit in signs that share the same modality (cardinal, fixed or mutable) but belong to different elements. Both planets want to move in the same direction, yet they use different tools and pursue different priorities. The result is tension and friction, which is why the square is classed as a «challenging» aspect. A Sun-Saturn square, for example, can describe a struggle between the desire for self-confidence and a tendency toward self-restriction.

The tension of a square is often read as the most dynamic and productive part of a chart. It pushes a person to take action, look for solutions and, over time, build skill. Unlike an easy aspect, the pressure a square brings cannot be ignored. In a T-square, a figure made up of three planets (two in opposition, the third square to both), the tension converges on a single point, and the third planet is interpreted as a kind of outlet. Themes shown by challenging aspects can be worked through with personal effort; astrological interpretation does not guarantee any outcome.

△ Trine (120°)

• flow
• talent
• ease
• harmony

The trine (120°) is the aspect formed when two planets sit in signs of the same element, roughly 120 degrees apart; its orb is about 7 degrees. Sharing an element means the two planets speak the same language and their energies flow without friction. The trine is considered the most harmonious aspect in astrology and is classified as «harmonious». In a chart, it shows natural talents, the things a person does with ease, and the areas that come to them effortlessly.

The trine's only challenge is that, because it comes so easily, it tends to go unnoticed and undeveloped. Since the person takes this talent for granted, they often don't work on it. The aspect's potential becomes clear when it is supported by conscious effort. When three planets in the same element form trines with one another, the pattern is called a «grand trine». Because this configuration works like a closed loop, it is read both as a great resource and as a risk that the energy circles within itself without opening outward. Trines are also read as a support that balances the tension squares and oppositions can create in the chart.

⚻ Quincunx (150°)

• incompatibility
• adjustment
• transition
• flexibility

The quincunx (150°), also known as the inconjunct, is the aspect formed when two planets are about 150 degrees apart, with an orb of roughly 3 degrees. The signs involved in this aspect share nothing in terms of element, modality or polarity, so the two planets struggle to understand each other and work together. There is no open friction as with a square, nor is there the easy flow of a trine. The quincunx describes a situation in which two energies must constantly adjust to each other yet never quite fit, and it is counted among the «challenging» aspects.

The effect of a quincunx is often felt as a theme that calls for constant small adjustments in daily habits and routines. A person may find it hard to express both energies at once and tends to find a solution over time, through trial and error. In the «yod», or «Finger of God», pattern, where two planets each form a quincunx to a third planet while forming a sextile to each other, the third planet becomes a special focal point and is interpreted as a sense of personal mission. The quincunx is treated as an aspect that calls for adaptation and flexibility; interpretation does not guarantee any outcome.

☍ Opposition (180°)

• balance
• polarization
• projection
• awareness

The opposition (180°) is the aspect formed when two planets sit directly across from each other in the zodiac, and it is allowed an orb of about 8 degrees. Opposite signs share the same modality and the same polarity but face in opposite directions, as with Aries-Libra or Taurus-Scorpio. This is why the opposition describes a search for balance. A person often swings back and forth between the two needs represented by the two planets; while living out one, they may project the other onto the person or situation in front of them. The opposition is classed as "challenging" because achieving balance takes conscious effort.

The most familiar example of an opposition is the full moon, when the Sun and Moon stand at opposite ends of the zodiac. In a chart, oppositions also come to the fore along house axes such as the 1st-7th, 2nd-8th and 4th-10th. The resolution of an opposition lies in integrating the two ends rather than letting one exclude the other. In a Sun-Saturn opposition, self-confidence and responsibility can be balanced this way; in a Venus-Mars opposition, closeness and independence. With oppositions there is a tendency to live out one end in oneself and see the other end in other people; once this projection is recognized, finding balance becomes easier. The T-square, a figure in which two opposing planets both square a third planet, focuses the tension onto a single point.