Asteroid
From Planetarion Wiki
Description
Asteroids are the primary source of revenue for a planet, and you can get them by either initiating them or by capturing them through combat.
Initiating
The price to initiate an asteroid is determined by the following formula:
Cost = 1000 + (250 * amount of asteroids of that type you already have)
Note that to initiate asteroids of a certain type, you will also have to pay resources of the same type. It takes Metal to initiate Metal asteroids, it takes [[[Crystal]] to initiate Crystal asteroids, and it takes Eonium to initiate Eonium asteroids.
Each asteroid gives 250 resources of its type per tick