If you drive from Los Angeles to Las Vegas through the Mojave Desert you will pass a signpost for Zzyzx Road. This is a made-up place only officially recognised in the 1980’s. The original land-developer wanted a name that would be at the end of the alphabet. I bet he was fun at parties.
On the other hand, a Syzygy is a real thing. It sounds like a part of the brain or a rare grammatical construct, but it is in fact the astronomical term for when the sun and moon and/or planets align.
As you may expect, moons and planets align a lot more often than stars, but don’t panic. Big C only wakes when the stars are right.
Nevertheless, bad stuff still happens when planets line up and this is what the plucky investigators must tackle in Strange Remnants, the new small-box expansion for Eldritch Horror.