Aspect in astrology is the angular distance between the planets. In simple terms, it is the relationship between the planets, the nature of their interaction with each other, as well as the signs in which they reside.

Aspects show how the energies of the planets work together: work in concert, complement each other, or, conversely, oppose each other.
The main aspects of the interaction of the planets are as follows:

conjunction – an angular relationship of 0°
Semi-sextile – 30°
sextile – at 60°
square – in 90°
trine – in 120°
quincense – at 150°
opposition – 180°.

Aspects can be harmonious: semi sextile, sextile, trine and quincos; and tense: square and opposition. A conjunction can be a harmonious aspect or a hard aspect. It depends on the planets that are involved.

Conjunction
An aspect in which two planets are side by side, almost in the same degree (up to 7° for luminaries, up to 6° for minor planets, and up to 5° for major planets are generally considered). Depending on the manifestation of the planets and the Zodiac sign where they are located, the conjunction can be harmonious or tense.

Semi-sextile
This is a growth zone. The planets which are in the semi-sextile develop in a person in parallel: the qualities of one planet develop the qualities of the other and vice versa. Sometimes one planet is in a more favorable position than the other in the Semi-Apsextile, but in this aspect, it is extremely important to take the time to develop the qualities of both planets.

Sextile
Planets in 60° of each other bring new opportunities, but not immediately. It can even appear stressful when described, for it presents challenges. But these are difficulties that can be overcome in order to achieve harmony between the planets and their Manifestations, and this experience remains with the person forever and will only appear harmoniously in the future.

Quadrature
In turn, this is a tense aspect, which also means difficulties and experiences. But according to the functions of the planets in the square, a person will always want to change, and the forces for this will not be small.

Trigon
This aspect between the planets brings good luck and optimism. Those who exhibit the qualities of the planets together always seem to be in luck. Although the aspect is harmonious, it can play a cruel joke on the bearer. He will relax in developing the qualities of the planets in the trine because he is already more successful in them than those around him. And he will miss out on a really big fortune and a big score.

Quincos
A controversial aspect that, while considered harmonious, can cause quite a few problems. Placing the planets at 150° from each other means that their functions need to be ordered, adjusted and coordinated with each other. Without this, they will interfere with each other, constantly creating confusion. But if you find something in common in the manifestation of the functions of the planets that are in Quincos, you can expect pleasant surprises in the functions of each of them.