Sensor sweep is a ship mission that will scan planets within 200 lightyears radius for enemy activity.
Planets can be decected if there are more than 15 factories or 20 mines on the surface. If your ship has detected an enemy planet, you will recieve a message with the planet ID, the race that owns it and the industry level on the planet.
scan range: 200ly
less then 15 factories or 20 mines = not detectable by sensor sweep
more then 15 factories or 20 mines = light industry
more then 100 mines and factories combined = heavy industry
more then 15 defence outposts = not detectable by sensor swee
100% – Defense Outposts * 6.66%.