A solar systems with high electricity consumption will send out emission that can be detected by cities in other solar systems. The strength of the emissions is affected by the total about of electricity used by all cities and spacecraft in the solar system.
A city's chance of detecting emissions from other solar systems depends on the city's sensor TL and the strength of the emissions.
Detection Range Calculation
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Star map now shows a yellow glow around unexplored solar systems from which city emissions have been detected.
Solar systems emit a signal based on the hourly consumption of power by all cities in the system. The strength of this signal determines the maximum distance at which the system can be detected.
Cities with sensors detect the signal emitted by solar systems. Detection range of cities is 10pc per sensor tech level. City sensor tech level is the highest tech level of the airport terminal and anybases.
Detected solar systems are remembered for up to 48 hours after the last signal is detected from that system.
This information accumulates as the servers run. It may take an hour or two after the servers start before you start detecting city emissions. This will always be the case as this information is not stored.
Empires were reported to be too vulnerable to raiders based in the void. There is no way to know where the raiders came from or went.
System emissions are based on power consumed in a system. Power consumed by ships is now added to that signal; previously the signal was only based on power consumed by cities.
This is a step toward solving the problem, not expected to eliminate the problem. I am still considering other steps.
