This word is cool for two reasons:
SYZYGY – has 3 Ys alternating, not to mention a Z. What an awesome scrabble word!
SYZYGY – means
1. An alignment of three objects, for example, sun, moon, and earth during an eclipse.
2. A pair of related things.
The first meaning is celestial so I love it automatically. Yet another word I will have to try to use in a story someday.
[All information once again courtesy of A.Word.A.Day.]