Many years ago, when Jeff Nisbet published his thesis on the encoding of the earth’s axial tilt of 23.5°, we had vigorously discussed the enigmas of Rosslyn Chapel’s ceiling. He had been studying Scotland’s ancient mysteries for decades, and I hadn’t. But, that never stopped me from throwing ideas at the wall to see what might stick.

Jeff’s thesis involves factoring in the geometry of the ceiling, and showing how it relates to the story of the Great Flood, and how that had an effect on the earth’s axial tilt. It’s an interesting thesis and I urge a reading.

During our conversations, which were accompanied by my old astro-friend historian Rab Wilkie, I had mentioned that I suspected there exists a further proof for the earth’s axial tilt being encoded in the vaulted ceiling, and that proof goes back to our favorite prime number 11 — the number of courses of masonry in the ceiling. To understand this, we need to look at the basic math and geometry of the Gothic pointed arch.

• astrology
• Exaltation of Mars
• Rosslyn Chapel
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