Super Sizzling Syzygy.....

Certainly, I am rather backward but when I first stumbled over this word, it sounded like a newly-branded energy drink. Or the name of a Czechoslovakian perfume. Or a strange skin disorder. Or yet another cute cartoon character launching a range of themed merchandise. Or one of those obscure political slogans that you see emblazoned across t-shirts, which keep everyone guessing without reaching any conclusions.
Wrong again. But now that I know what it means, I just can’t stop composing….night and day…..sun and moon...little and large...joy and sorrow….light and dark….boy and girl…..Tom and Jerry…..by the way, does anyone know how to pronounce the word?