All Evil Empire owned ships can perform the mission dark sense. As a result, the Evil Empire will recieve a messgae of ALL planets within 200ly that have enemy colonists, except for Rebel-owned planets. The Dark Sense can not be blocked.
The Dark Sense message includes:
-Amout of each mineral on/in the planet
-Amout of cash on the planet
-If there is a starbase in orbit or not.
Your ship needs fuel to perform Dark Sence, but the mission itself does not burn fuel.