Sun-sign compatibility · fire and air · two signs apart
Aries and Aquarius compatibility
Aries and Aquarius are two signs apart on the wheel, a sextile of about 60°: fire and air, one cardinal and one fixed. Astrology reads the angle between two Sun signs as the first measure of a pair, and the rest of the two charts as the rest of the story.
This year the Sun is in Aries from 20 March to 20 April and in Aquarius from 20 January to 18 February. 5 famous couples in StarMap's dataset are an Aries and an Aquarius, where chance would give about 7.1: Jennifer Aniston and Vince Vaughn, Alice Walker and Tracy Chapman and François Truffaut and Fanny Ardant among them. Among the 537 couples with both Sun signs certain, that makes this the 56th most common pairing of the 78. A Sun sign is one placement of ten, and the two whole charts say far more than the two signs.
Each sign has its own page: Aries and Aquarius, with its dates to the minute, its traits and the famous people born under it.
What astrology reads for Aries and Aquarius
Two signs apart is the sextile, and astrology reads it as the angle of easy conversation. The signs belong to elements that feed each other, fire with air or earth with water, so the two people tend to want compatible things without wanting the same thing. The tradition reads the pairing as friendly first: it is the angle most often found between people who liked each other before anything else was decided.
Because the sextile asks little, it is also the angle the tradition says can be left to drift. There is no friction to work against and no mirror to look into, so the relationship tends to be as warm as the attention it is given. Astrologers read it as an opportunity rather than a pull, and look to the rest of the two charts for whatever holds the pair together when the conversation stops.
Fire with air
Fire with air is read as the pairing that feeds itself: air gives fire room to burn and fire gives air something to be excited about. The tradition reads these two as talkative, restless and fast, good company for each other and inclined to keep moving rather than settle. The reading's question is where the stillness comes from, since neither element supplies much of it.
Cardinal with fixed
One sign is cardinal and one is fixed: a starter and a keeper. The tradition reads the pairing as complementary, the cardinal sign supplying new directions and the fixed sign holding to the ones worth keeping, and as a contest when the one that starts wants to start again and the one that holds has only just settled.
These are readings of the Sun signs alone, written for reflection and entertainment. They describe tendencies the tradition assigns to an angle, not two people, and they do not say whether a pair lasts.
Aries in love, Aquarius in love
Aries
In love, Aries pursues. Interest is shown early and plainly, the chase matters, and the sign is at its best with a partner who can hold their own rather than one who gives way. What it needs to learn is patience: desire arrives before tenderness, and the relationship lasts when the second catches up with the first.
Aquarius
In love, Aquarius starts from friendship and never quite leaves it. It needs space and conversation, resists possessiveness, and can seem detached when it is simply thinking. Its lesson is that intimacy is not a loss of freedom, and that feelings do not have to be reasonable to be said.
532 famous people have the Sun in Aries for certain and 530 in Aquarius: every Aries Sun and every Aquarius Sun, each with a birth chart.
Famous Aries and Aquarius couples
Of the 537 spouse and partner pairs in StarMap’s dataset whose Sun signs are both certain, 5 are Aries and Aquarius. From the share of each sign among every couple’s members, chance alone would give about 7.1, a ratio of 0.70, which makes this the 56th most common pairing of the 78. Their sky match, from the angles between the two charts, averages 67 out of 100 against 67 for every couple counted. With about seven couples a cell, a ratio between a half and double is what chance produces; the counts describe the dataset, not the signs.

77Jennifer Aniston and Vince Vaughn
Listed as partners, 2005 to 2006

57Alice Walker and Tracy Chapman
Listed as partners in Wikidata

72François Truffaut and Fanny Ardant
Listed as partners, 1981 to 1984

53Diane Lane and Christopher Lambert
Married in 1988 · marriage ended in 1994

77Jennifer Morrison and Jesse Spencer
Listed as partners, 2004 to 2007
All famous couples, each scored from both birth charts.
Both signs in one chart
The two signs also meet inside one chart, when the Sun is in one and the Moon in the other. Astrologers read a Sun and Moon two signs apart the way they read the two Suns above, as a sextile between how a person is seen and how they feel.
Sun in Aries, Moon in Aquarius: 16 famous people
Sun in Aquarius, Moon in Aries: 23 famous people
Only people whose Sun and Moon signs do not depend on an unknown birth time are counted. The Moon in Aquarius and the Moon in Aries have pages of their own.
Questions people ask
Are Aries and Aquarius compatible?
By Sun sign alone, astrology reads Aries and Aquarius as a sextile, two signs apart: fire and air, cardinal with fixed. That is a reading of one placement of ten and not a verdict on two people. In StarMap's dataset of famous couples, 5 are Aries and Aquarius, against about 7.1 that chance would give, a ratio of 0.70. The angles between two whole charts, Moon to Moon and Venus to Mars among them, say more than the Sun signs can; the comparison is free on StarMap.
How many famous couples are Aries and Aquarius?
5 of the 537 couples in StarMap's dataset with both Sun signs certain, Jennifer Aniston and Vince Vaughn, Alice Walker and Tracy Chapman and François Truffaut and Fanny Ardant among them. Chance alone would give about 7.1, which makes it the 56th most common pairing of the 78. Their sky match, from the angles between the two charts, averages 67 out of 100 against 67 for every couple counted.
Who has the Sun in Aries and the Moon in Aquarius?
16 people in StarMap's dataset have the Sun in Aries and the Moon in Aquarius, Russell Crowe, Seamus Heaney and Tennessee Williams among them. 23 people in StarMap's dataset have the Sun in Aquarius and the Moon in Aries, Ellen DeGeneres, Gerard Piqué and Rosé among them. The Moon's sign depends on the day and often on the hour of birth, so only people whose Moon sign is certain are counted.
Sun signs are computed from the Sun’s position with the astronomy-engine ephemeris, checked against Swiss Ephemeris, in the tropical zodiac. Birth data and relationship data come from Wikidata; birth times, where StarMap has one, from Astro-Databank with their Rodden rating. A couple is counted only when the Sun was in one sign for the whole of each birth date. Readings describe what the tradition assigns to an angle, for entertainment and self-reflection; StarMap predicts nothing. Compare two whole charts.
Photo credits (16 photos from Wikimedia Commons)
Each link opens the photo’s page on Wikimedia Commons, which states its author and licence.