Space

AURORA

An aurora is a natural light display in the sky caused by charged solar particles colliding with gases in Earth's upper atmosphere. Near the north pole it is called the aurora borealis, and near the south, the aurora australis. It is named after the Roman goddess of dawn.

AURORA 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.