Bases can not be upgraded. They are static. They are designed to allow you to gain better control over your planet and system.
Yes, fighters and torps are launched automattically when your planet is attacked.
I think the amount of fightes released is directly equal to the amount of energy the planet has. SO DO NOT RUN LOW. And remember if you have your planet set to ALL TRADE, someone could buy all your energy then attack your planet.
I don't know about how to find out what our own planets are capitable of. I'll have to ask CNC.
You can also email the games creater and ask him.
(His name is rick something I think. I beleive there is a link to his email on every page.)
[ February 11, 2003, 08:28: Message edited by: Atrocities ]