Planet/System Status

In Twilight Imperium Third Edition, a Planet, System or Unit's status is referred to on various game components and in the Rule book 
From the perspective of each player, a planet may be: 
* Friendly: A friendly planet is one under your control. A friendly system is one that contains planets you control and no enemy ships. A unit is referred to as "Friendly" if it lies in such a system 
* Neutral: A neutral planet is not under control by any players (such as a planet before the first invasion)
* Hostile/enemy: A hostile/enemy planet is one that is controlled by another player