If something is sublunary, it belongs to the world we live in — under the moon and not the heavens above.
Sublunary is an old-fashioned term used to describe things that are earthly, rather than celestial. The word comes from Latin, with sub meaning "under" and luna meaning "moon," literally translating to "under the moon." It refers to the ordinary, everyday things we encounter in life, as opposed to the divine or otherworldly. For example, our daily chores and routines are sublunary activities.