Ark Galactapedia

Croshaw IV is an uninhabitable super-Earth in the Croshaw system, United Empire of Earth (UEE) and is the furthest planet from the system's sun. Geological evidence suggests that it once had an atmosphere partially made of water vapor, but due to an unknown event, the atmosphere dissipated. The impact of a large meteoroid is considered the most likely cause; however, a crater large enough to support this hypothesis has yet to be discovered.