To the left is the local galaxy view to the game. Fifteen planets and the Mysterious Nebula are located in each system. Here you will find occupied and desolate planets.
The ☮ sign obviously means the planet is too weak attack. One factor is lack of activity within the game. A green dot next to the planet name depicts recent activity. A debris symbol indicates a planet ready to be pillaged for resources via Recycler. Also if the planet glowing green, it is considered an 8 hour recovery period after losing a battle. Although it can be attacked at anytime, one might reconsider the consequences of farming the same planet when the victim's alliance returns the favor The Soviets.
To the right is the galaxy view of each system at a glance. Each system is designated by galaxy and system number as well as the number of planets are populated per each system. When the home planets are running low on goods, go scour the systems for debris to collect. There's a possibly in finding players and alliances in hiding. The further away the system is, the longer is takes to deploy for interaction or exploration.