I dont know what just happened, but I sent 5 espionage probes to spy on one guy, then they got destroyed?!?
This happens when your espionage probes get detected during a spy mission. They go into combat. Since Espionage Probes have the worst fighting capability of any of the mobile ships (Solar Sats are worse, but they can’t move) they get destroyed easily.
Although it is possible to get detected during a spy mission and win the fight… but very very rare!