You might have skipped the explanations on how to find the pirate Outpost. That is required for you to proceed with the bounty and weapons part which will then In turn, unlock the other parts of the star system.
Tldr: you need to create an illegal bot, which is one who has an IQ higher than 140. Then chat with Nimhe. that part is explained in detail in the walkthrough, section bot lab.
The pirate Outpost is not the planet tenaris, it is a hidden pirate base which you will only see on your navigation system once you have done above steps.