In Fairy Tales
I am sure you are familiar with the Beauty and the Beast fairy tale. There are many variants of the tale, all belonging to the "Beauty and the Beast" folk motif (tale type ATU 425C in the Aarne–Thompson–Uther Index).
Closely related motifs are type ATU 425A "The Animal (Monster) as Bridegroom" and type ATU 433B "King ...
The Daoist principle of Yin and Yang doesn't see light and dark as good and bad, but as complementary.
Yin is characterized as slow, soft, yielding, diffuse, cold, wet, and passive; and is associated with water, earth, the moon, femininity, and night time.
Yang, by contrast, is fast, hard, solid, focused, hot, dry, and active; and is associated with fire, ...
Several real bird species are called "firebirds":
subspecies of northern oriole, like Baltimore oriole
various birds, having bright scarlet or orange plumage like Scarlet tanager
Il Saggiatore by Galileo Galilei was written in 1623
If I'm correct, it portrays the conjunction of Saturn with Jupiter and Venus in the constellation Cancer and Rubens based his painting on Galileo's work.
Since planets were considered "stars" and "luminaries" in astrological parole, ...
See (Spanish) article in El Pais:
Painted in 1636, the three stars in the painting represent the planet Saturn as described by Galileo in 1610, a few years before. The central star is the planet itself, whilst the two others represent what he thought were two stars aligned with the planet. In reality, these were the rings around the planet, which his ...