Oh right, there is no such option because they refuse to trade with me.
Sending an agent to blow it up is a viable option now...

Anyway - Thanks!

Thanks!

But how exactly do I attempt to buy the station? I cannot find that option...

<t> Hi there!<br/>
<br/>
I just colonized a system which happens to have a mining base of a different empire on the neighbour planet of said colony.<br/>
The system is now under my influence and nobody else should be able to build there without declaration of war. But -of course- the mining base ...