under the Sun's beams

UN-der thuh SUNZ beemz

greek: ὑπὸ τὰς αὐγάς (hypo tas augas) · latin: sub radiis

Definition

Under the Sun's beams (Greek ὑπὸ τὰς αὐγάς, hypo tas augas — "under the rays") is the broad doctrine of a planet weakened by sitting too near the Sun to be seen: it lies within roughly 15° along the zodiac, so the Sun’s light hides it from the naked eye. Crane lists it as one of four visibility conditions ancient astrologers watched for, with cazimi (within about 17' of the Sun’s centre) and combust (within about 8°30') as the tighter inner zones, and a planet fully free of the Sun’s rays as the contrasting state.

In Tradition

For Hellenistic, Arabic-Persian, and traditional Western astrologers, under-the-Sun's-beams is the visibility-based weakness that holds combust and cazimi inside it as graded sub-conditions. A planet under the beams is weakened simply because it cannot be seen. Crane treats this Hellenistic visibility doctrine as the parent of the later medieval idea of combustion, though the Hellenistic tradition did not yet use the 8° combustion rule itself.

In Practice

Astrologers count a planet within roughly 15° of the Sun along the zodiac as "under the beams," with combust (within 8°30') and cazimi (within 17') as the tighter inner zones of the same hierarchy. Crane uses the doctrine in real charts: for Mozart, Mercury in the Sixth is under the Sun’s beams, and for John Paul II, Mercury in the Eighth is too. It does not apply to lots — Crane notes "a lot is never considered under the Sun’s beams, since a lot is not a planet." For Mercury and Venus, evening risers begin to emerge when the planet is about fifteen degrees from the Sun, and after a morning setting the planet "goes into the beams again." In horary, the question-answering branch, a significator under the beams is read as blocked or hidden; in a birth chart, the planet’s outward expression is reduced. The nearer to combustion the weaker, and the nearer the 15° outer edge the more it recovers as it leaves the rays.

Historical Origin

The Greek hypo tas augas is attested in Hellenistic sources — Crane (Astrological Roots: The Hellenistic Legacy, 2007) reconstructs the doctrine across Ptolemy, Valens, and the cookbook tradition, listing under-the-Sun's-beams among four ancient visibility conditions. The Arabic transmission (al-Bīrūnī, Sahl ibn Bishr, Abū Maʿshar) carries it into the Latin medieval corpus as sub radiis. William Lilly's Christian Astrology (1647) fixed it for English-language traditional practice, and the modern traditional revival (Lehman, Obert) keeps the graded scheme.

Etymology

Origin: Greek. Meaning: Under the rays (of the Sun); the encompassing 15° solar-proximity visibility-debility zone.

Further Reading