Space
NEBULA
A nebula is an interstellar cloud of dust, hydrogen, and other gases, often a nursery where new stars are born. The Latin word simply means 'cloud' or 'mist'. Famous examples include the Orion Nebula and the Crab Nebula.
NEBULA 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.