you can't its imposible
You attack the buildings and other ships in the system and keep attacking with your fleet until the planet's strength is below 0. Next warp to other planets until the messages say the planet is uninhabited. Then you can transport onto the planet to take it over if you have enough away team experience.
First, make sure that your Away Team Exp. is at 100% or more and you have a flag. Then, transport to an uninhabited planet and it will become yours. To capture a planet, attack it constantly until its strength becomes zero. It will eventually become uninhabited and you can transport to it.
The Point is to pretty much Have fun and the game does not end(No win unless you take control of all planets(still no end to game)).
I think you need to get your prestige in a system to -1000
Not yet but it will probably come out soon may be a faulse roumor
saves on it's own when you warp to a different planet.
go on to maxgames and go to the action page and scroll down
When DW and the team have made it simple as its back on.
Hail planet Dyson and attack it until the planetary strength turns to -500. Then press letter T to claim the Dyson Sphere. (Must have AT training of 100+)
sometime 2009. The producer keeps on delaying it.
press the shift key and click the plan