Planet (Barren)

Description

Barren planets are archetypical "dead terrestrials": dry, rocky worlds with a minimal atmosphere and an unremarkable composition. They are commonly etched with flood channels, which are often broad enough to be visible from orbit; most such worlds have accumulated significant quantities of ice over their lifetimes, but cannot retain it on their surface. Generally surface liquid evaporates rapidly, contributing to the thin atmosphere, but occasionally it will seep back into the ground and refreeze, ready for another breakout in future when the local temperature rises.