I picked up a mission to retrieve a black box in a specific system, and I've gotten to that system, but now I'm at a lost as to what to do next. I've done some looking online which suggested to just do a discovery scan of the system and that should reveal it, but it didn't reveal one as far as I can tell. I also read I could go to the nav beacon as well, but when I go to the nav beacon nothing actually happens (although it's possible I'm not close enough).
I'm rather at a loss as to what to do next. How do I locate and then retrieve the black box for the mission I'm on?