
-The timer is run every 17 tics which is a little less than 2 times per second (30 ticks per second)
- if you were to destroy the station from more than 30 ls away, and wait the pteravores will still be there when you get close, the chance to stop only happens when you're close.
-They only send out 2-4 pteravores at a time, but because the event runs almost twice a second it turns into a swarm.
Even if you let the game run for a week, if you're more than 30 ls away there will be pteravores when you get close. Your best bet is to destroy the nest and hide somewhere close to the wrecked station to run out the timer. Hiding behind a manipulator is a great strategy. Also, make sure you destroy the pteravores before accepting the svalbard explorer mission and it becomes a cake walk.