Astrologers often point to the cycles of the outer planets to describe periods of historical development. Yet these cycles themselves form part of a much larger pattern—one in which individual consciousness is called to interact with world consciousness, particularly at moments when society is challenged to reflect its highest ideals.

The concept of the Black Luminaries originated in France in the early 20th century with the noted astrologer Dom Neroman (Pierre Rougié). They consist of the Black Moon at the lunar apogee—both Mean and True—and its polarity point, Priapus. The other Black Luminary is the Black Sun at the aphelion, together with its polarity point, the Diamond.

French astrologer Jean Carteret later interpreted the dialectical interaction of these points within the context of the post-structuralist and symbolic astrology that developed during the 1960s and 1970s. He also collaborated with Dutch astrologer George Bode in establishing Structural Astrology. Through this work, Bode discovered that key turning points in history have often been marked by alignments between the Black Luminaries and the Lunar Nodal Cross.

The Black Moon, Priapus, Black Sun, and Diamond can each be understood as symbolising different aspects of consciousness—an idea that resonates strongly with developments in 21st-century culture, particularly in fields such as the quantum sciences, where the role of consciousness is increasingly being integrated into scientific models.