The four elements: what you run on
Each element covers three signs, spaced evenly around the zodiac.
- Fire (Aries, Leo, Sagittarius). Runs on enthusiasm. Fire acts, then finds out. It tends to get bored by caution and to recover quickly from setbacks.
- Earth (Taurus, Virgo, Capricorn). Runs on what’s real. Earth wants to know whether it works, what it costs and who’s going to do it. It tends to trust what it can touch.
- Air (Gemini, Libra, Aquarius). Runs on ideas and people. Air needs to talk a thing through and see it from another side, and it can feel trapped by anything that won’t be discussed.
- Water (Cancer, Scorpio, Pisces). Runs on feeling. Water takes in the mood of a room and remembers how things felt long after it forgets what was said.
The three modalities: how you deal with change
Each modality covers four signs, one from each element.
- Cardinal (Aries, Cancer, Libra, Capricorn). Likes to start things. These signs fall at the start of each season, and they tend to be the ones who call the meeting, whether the meeting is about a company or a family vacation.
- Fixed (Taurus, Leo, Scorpio, Aquarius). Likes to keep things going. These signs sit mid-season, and they’re loyal and hard to shift, which is either wonderful or maddening, depending on what they’ve decided.
- Mutable (Gemini, Virgo, Sagittarius, Pisces). Likes to adjust. They come as a season is ending, and they tend to be flexible, curious, and a bit hard to hold to anything.
Twelve combinations, no repeats
Put the two together and you get every sign, once each. Cardinal fire is Aries, the person who starts things with a burst of energy. Fixed fire is Leo, a flame that keeps burning and wants to be seen. Mutable fire is Sagittarius, a blaze that moves on to the next hill. Same element, very different people.
Run the other direction and it works just as well. Taurus, Leo, Scorpio and Aquarius are all fixed, and all four can win a standoff by simply not moving. They just hold out over different things: comfort, pride, trust and principle.
What this tells you about two people
Astrologers use these groups to explain why certain angles feel the way they do. A trine usually joins two signs of the same element, so the two tend to run on the same fuel. A square usually joins two signs of the same modality and different elements, so they share a way of dealing with change but want different things. That’s why two fixed signs in a square can argue for a very long time, and neither will blink. See harmonious, challenging and dynamic aspects for how the app labels them.
Two practical notes. First, fire and air tend to feed each other, and earth and water often get along too, though there are plenty of exceptions. Second, a single sign tells you little. Most charts spread across several elements, and your own mix is worth more than your Sun’s. That’s what the dominant element guide covers.