Space
ZODIAC
The zodiac is a band of constellations along the Sun's apparent path across the sky, divided into twelve signs. The term comes from the Greek 'zodiakos kyklos', meaning 'circle of animals'. Astronomers recognize a thirteenth constellation, Ophiuchus, that the Sun also passes through.
ZODIAC is the kind of word that shows up in themed word searches like Strands. Themed puzzles group words like this under a shared category — here, Space.