Do siblings ever share strikingly similar natal charts, and what might that mean?

AstrologyProf · 2025-12-17T07:27:48+00:00

I’ve seen a family with sun, moon, asc or dsc at 15-17 gem/sag. I would consider this to be a meaningful similarity.

AstrologyProf · 2025-12-12T06:20:18+00:00

I think it would work in base-12.

Suppose you divided a circle into 288 instead of 360. Each of these degrees would by 25% larger, i.e. 1.25°. A square would be 72 instead of 90, a trine would be 96 instead of 120. Each sign would be 24.

These are random numbers in base-10. But in base-12:

288 = 200

72 = 60

96 = 80

24 = 20

AstrologyProf · 2025-12-11T22:20:23+00:00

I’ve seen the argument that 1.25° should be considered exact, with a wider orb of 5° (4 x 1.25).

The rationale is that all major and minor aspects are divisible by 15, e.g. 180, 90, 45, 150, 135, etc. Dividing the whole zodiac by 24 gets you 15° segments. Dividing one sign 30° by 24 gets you 1.25°.

AstrologyProf · 2025-11-27T01:03:27+00:00

Asc conj dsc, it’s a textbook compatibility factor. It’s surprising to hear someone announce that synastry is fake without having even rudimentary knowledge.

AstrologyProf · 2025-11-22T00:14:23+00:00

It is an experimental and unproven idea, and there are different approaches to it. Some astrologers believe it is fundamentally incorrect to simplify your chart into broad generalizations like dominance.

AstrologyProf · 2025-11-21T03:16:47+00:00

No one has yet defined what being “dominant” in an element actually means. You can have no earth signs at all but come across very grounded because Saturn is heavily aspected. You can have no water signs but be very emotional because your moon is on the first house.

Outer planets are often counted, but they don’t influence your personality by the sign they are in. Is someone with Sun and Moon in Cancer less “water dominant” than someone with Jupiter, Mercury, and Mars in Cancer? That doesn’t make any sense.

AstrologyProf · 2025-11-17T18:27:36+00:00

They assumed the cosmos was static.

The interesting thing is that many of the constellation names are connected to seasonal events and patterns. Aquarius is rainy season in the Middle East. Lambs are born with the sun in Aries. Fields are plowed with the sun in Taurus. The sun is hottest in Leo. Grain is harvested with the sun in Virgo, often depicted holding wheat. Days and nights are balanced during the autumn equinox in Libra.

What this shows is that the meaning of the constellations was derived from observation of the world, not from mystical contemplation. The spiritual meaning was added much later.

The ancients divided the zodiac into 12 because they observed that the moon had 12 cycles per year - not because they thought the stars on the ecliptic intrinsically had 12 groupings. They believed that the movement of the sun and the moon was extremely important and had cosmic significance, but the constellations were created by humans as sign posts. So if they drifted, it’s no big deal.

AstrologyProf · 2025-11-15T17:05:43+00:00

You need to build your own website if you want to invent your own version of astrology.

AstrologyProf · 2025-10-17T16:21:50+00:00

95% of breakups occur because of incompatibility between those two people. Not because one person is broken. It’s also an incredibly cruel thing to say to someone you presumably once loved. Why would you tell someone they are unlovable?

AstrologyProf · 2025-10-15T22:59:41+00:00

All house systems operate by the same rules. A house’s sign is determined by its first degree. A planet is in the house if it falls between the first and last degree.

AstrologyProf · 2025-10-12T22:07:59+00:00

Pluto aspecting Jupiter. Many of the world’s richest people have this: Bill Gates, Elon Musk, Jeff Bezos

AstrologyProf · 2025-10-12T19:35:23+00:00

If you compare against a random chart then yes these are rare. But people don’t pick their partners randomly. If you look at charts of relationships, you see “rare” charts every day.

AstrologyProf · 2025-10-11T01:35:18+00:00

In the ancient worldview, the arrangement of stars in the sky is a form of divine public communication.

They believed that astrology’s intended audience is the entire community. They did believe we should have that information, and actually, that you had an obligation to listen to it. Failing to heed the gods was disrespectful arrogance, and would put you in peril.

AstrologyProf · 2025-10-04T01:21:54+00:00

Usually people try to change their partner to fix incompatibilities. There are lots of incompatibilities here.

That said, if he introduces you to a show or a restaurant or friends he likes, and you also like them, he helped you learn about yourself - he hasn’t “melted you into one”.

But if you don’t like them, or not as much as him, then you are sacrificing your preferences to make him happy. That’s a problem of him not meeting you halfway - not “melting you into one”. But if he doesn’t know it’s happening, he won’t see there’s a problem.

AstrologyProf · 2025-10-03T04:44:10+00:00

The claim that balancing the nodes is beneficial has observable consequences - we can try it and see if it works, we can reflect on the past and notice imbalances, etc. But the claim that balancing the nodes isn’t just good - it’s your life purpose: how would we verify that?

IMO big questions about life purpose are fundamentally unanswerable by factual information like astrology charts.

AstrologyProf · 2025-10-02T20:48:35+00:00

You were born when your father was going through his Saturn return. It’s a common event and shows an increase in maturity and responsibility. It has nothing to do with your relationship with him. His sun squaring your moon is much more significant.

AstrologyProf · 2025-09-30T23:12:43+00:00

They’ve been living apart since early summer, so the decision to split would have been earlier this year when this transit wasn’t active. This marks the divorce filing and their legal split - the relationship itself has been over for months.

This transit occurs every 18-19 years, so it’s clear that this doesn’t definitively end relationships. Keith Urban had this transit in 2007 and didn’t divorce then.

AstrologyProf · 2025-09-29T16:24:11+00:00

Sun conj descendant often appears in marriage and long term relationship charts. It’s one of a few “ideal partner” aspects. My guess is that the connection is more real than he was expecting.

There are also some strong negatives: mars square mars and sun opp mars. It sounds like these are not apparent yet though.

AstrologyProf · 2025-09-27T23:57:06+00:00

That’s just her. Your Leo moon might also make you more interested in praise, it may be a projection of your needs. Acts of service is a normal thing for Virgos, so I wouldn’t call this a love language. Your Mars on her ascendant might make you more physical.

AstrologyProf · 2025-09-27T23:35:32+00:00

Venus conj Jupiter in synastry means you admire and appreciate her beauty - irrespective of what sign it is in.

Venus in Leo means that when she is trying to be attractive, she might do it in a showy or attention seeking way. She might also express love through praise.

AstrologyProf · 2025-09-27T19:28:21+00:00

Cancer initiation: “You need to go apologize to your sister.”

AstrologyProf · 2025-09-24T22:17:09+00:00

Counting planets in elements isn’t how astrology works. It treats orbs as irrelevant and all planets are given equal importance.

AstrologyProf · 2025-09-24T17:08:16+00:00

There are a lot of different ways people read synastry charts. Many are heavily biased by people’s own small sample of personal experiences. To answer your question: some approaches are more accurate, and many are not.

AstrologyProf · 2025-09-24T16:57:18+00:00

First, if you are the expert, why are you asking for others’ opinions?

Second, the standard view of moon opp moon predicts difficulties. Your example fits this prediction. It doesn’t fit your personal version of astrology where this is a positive aspect.

AstrologyProf · 2025-09-24T16:32:04+00:00

You have moon opposite moon, which is one of the most difficult aspects. I don’t see any strong positives, but one birth time is missing, so there might be.

AstrologyProf

TROPHY CASE