Mars Conjunction Jupiter Synastry: When What Drives One of You Meets What Widens the Other's World, in the Same Place

Every birth chart has a Mars and a Jupiter, and they do different jobs. Mars is what drives you: your energy, your effort, your initiative, what you go after and how you go after it. Jupiter is what widens your world: your encouragement, optimism and generosity, and the sense that there is more to try and room to try it. In this contact, one person's Mars is within a few degrees of the other person's Jupiter.

Two points that close usually share a sign. (Usually, not always: a conjunction that starts near the edge of a sign can reach into the next one.) That is the geometry. The reading built on it is fusion, or mirroring: the way one of you goes at things and the way the other widens them can come from the same temperament.

This pairing can appear between friends, siblings, colleagues, flatmates, or a parent and their child as readily as between partners, and it is one contact among many in any two charts.

In this contact one of you brings Mars and the other brings Jupiter. Call them the Mars person and the Jupiter person.

The contact does not say which of you is which in daily life, and either of you may recognise both sides in yourself. If the link also runs the other way, from the Jupiter person's Mars to the Mars person's Jupiter, each of you is both.

One thing this contact can give is encouragement and effort arriving together. Either of you may name the next step, and either may say it is worth taking, so a project can gather size quickly.

Each of you may also give the other a sense of scale. A modest first step can be seen as the start of something, and a large hope can be broken into something to do this week.

What each of you may want is for the size of a plan to be something you chose. It can matter to be asked whether it has grown past what you had in mind.

These are sketches, not reports: illustrations of how the contact might look across different kinds of pairs.

• Siblings. Two siblings hang one bird feeder in the garden. By the weekend there is a notebook for sightings and a plan for six more feeders along the fence.
• Friends. One friend brings three cuttings to a plant swap. The other has already made a list of everyone on the street who might come next time.
• Flatmates. Two flatmates set up a glass terrarium on the shelf. The question of what else could go in it has reached the back of the bathroom.
• Colleagues. Two colleagues design a bookplate for the office library. The design is soon a stamp, a set of cards and a name for the whole shelf.

These are single moments, and each could go several ways.

The older sources used here have no stored passage that bears on a Mars and a Jupiter in any aspect. One of them, Vivian Robson's *A Students' Text-Book of Astrology* (1922), has a list on p. 141 that names the pair, not an aspect. That line is not among the passages checked for this page, and nothing from it is used.

The distinction this page makes, that a Mars and a Jupiter close together read as fusion or mirroring, rests on the kinds of sign a conjunction usually joins. It is an editorial reading, not something the older books say about Mars and Jupiter. Everything else on this page is editorial as well: who the Mars person and the Jupiter person are, what each gives and may want, and the sketches, which are illustrations.

• A small idea may be a larger one by the close of a conversation.
• You may each add to a plan before the first step is taken.
• It can be hard to say afterwards whose idea something was.
• You may look at what you have taken on and wonder when it grew.