[Aloofi]

Sorry I ask this. I have never used Stellar Manipulation (too fantastic for my taste) and I was wondering how that worked in the case of destroying a planet.
Let's say I build a mobile starbase with a Doomsday BLaster, what do I do then?
Do I drive the thing to the enemy planet?
Can i fire from a sector away?
If I get to the same sector of the planet, wouldn't the planet's defenses fire on my baby?
Do I have to survive the 30 turns of combat, and then after combat fire the main gun?

.