Newbie question--please answer

[bostonrpgmania]

Now I have new question
When a planet have limits in the number of facilities it can have, how I can increase the number?

Is it a good idea to destroy some of the facilities to be replaced by newer ones or just colonize new planet to build new facility?

When new shipdesign or weapons available, how can I upgrad vessels? (both new ones and the ones in the field. For example, in alpha centauri, we can just push a button to upgrade all the vehicles in the field)

Now I am at the very beginning of the game and had couple of space battles. But from the ship menu I see troop transporter. thus it seems ground war is also possible in this game?

I have heard that there is a mod for star wars (not star trek). Could you please tell me where I can find the mod?

Thank you!!!