The Aspects

When studying astrology, there are three core components to understand before exploring aspects: the houses, the signs, and the planets. Once you have a solid grasp of these, you can begin working with the fourth building block—the aspects. If you’re new to houses, signs, or planets, I recommend starting with my blog The Anatomy of Your Chart,

Before diving deeper, let’s define what an aspect actually is. An aspect is a geometric angle formed between planets or other significant chart points.

Aspects describe the type of communication taking place between planets or key placements such as the Ascendant, Descendant, Midheaven, IC, North and South Lunar Nodes, and Chiron. Understanding each aspect is essential because it reveals whether the dialogue is supportive and harmonious—or more tension-producing.

The purpose of learning the aspects in your chart is integration. Ultimately, you want all parts of your chart—and yourself—to work together. This means learning how to help different planetary energies communicate effectively. To do this, you first need to understand each planet’s “language” and underlying needs.

For example, if Jupiter—the planet of growth and expansion—is in your 10th house of career, it may be encouraging you to “dream bigger.” But if Jupiter forms a square to Saturn, which represents discipline and limitation, there can be tension between expansion and restraint. Your task is to help these two energies find balance so that neither is suppressed and both can function constructively.

Planets as Archetypal Energies

Think of each planet as an archetypal energy within you. Every planet has a purpose—a role it wants to express. The sign and house placement show how and where that expression takes place. In simple terms, the house reveals the area of life being activated, while the sign describes the style or attitude through which that energy is expressed.

Now that we understand what aspects are and why they matter, let’s explore the five major aspects that will give you a deeper understanding of your chart.

Conjunction: 0°

A conjunction occurs when two planets sit very close together—typically within 0 to 5 degrees of one another (this degree of influence is called an "orb"). When planets form a conjunction, their energies merge, creating a single, intensified expression. Because of this, it’s important to examine both planetary agendas carefully, as each amplifies the other’s influence.

Sextile: 60°

A sextile occurs when two planets are approximately 60 degrees apart, or two signs away from each other. This aspect creates an energizing and supportive connection that encourages opportunity and growth.

Sextiles tend to “excite” the planets involved, but the outcome still depends on which planets are interacting and where they fall in your chart. In other words, they offer potential—but require participation.

Square: 90°

A square forms when two planets are 90 degrees apart. This is often described as a challenging or tension-producing aspect—but its purpose is growth.

Squares highlight areas that demand attention. Rather than avoiding them, they invite you to ask: What needs to change here? These aspects push you to evolve by bringing unconscious patterns into awareness so you can work with them more intentionally.

Trine: 120°

The trine is considered a harmonious and flowing aspect, occurring when planets are 120 degrees apart—typically in the same element. Because these planets “speak the same language,” their energy blends naturally and easily.

However, there’s a caveat: ease can lead to complacency. If you don’t actively engage with a trine, its gifts may go underutilized. The question becomes: How are you consciously working with this natural strength? 

Opposition: 180°

An opposition occurs when two planets sit directly across from each other in the chart. This creates a dynamic of polarity—two opposing forces seeking balance.

It can feel like an internal tug-of-war, but the goal is not to choose one side over the other. Instead, you are learning to integrate both perspectives. When you allow each energy to be expressed without overpowering the other, you create balance and greater self-awareness.

To recap: once you understand where a planet operates (the house) and how it expresses itself (the sign), you can begin to interpret how different parts of your chart interact through aspects.

While there are many additional aspects to explore, these five are the most commonly used and provide a strong foundation for chart interpretation.

If you’d like to deepen your understanding and see how everything comes together—houses, signs, planets, and aspects—I invite you to explore my online class, Foundations of Astrology.