Space
METEOR
A meteor is the streak of light produced when a space rock burns up in Earth's atmosphere, commonly called a shooting star. If a fragment survives to reach the ground, it becomes a meteorite. Meteor showers occur when Earth passes through debris trails left by comets.
METEOR 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.