Most star systems have a planet orbiting them. Ground Bases are built on planets. Any number of races can build a base on the same planet. You can build ground structures at your ground base to improve the happiness of the colonies, recruit more troops, mine and smelt minerals, produce income, and defend the base from attack. Most planets allow you to build a number of food and income producing farms on them. The success of the farm depends on the planet`s climate and horticultural conditions. Climate can be changed using ship based terraforming devices and ground based structures. If the climate range of planet is in the range that your race`s farms can function they will produce one food unit and one megacredit each.

Planets have
mineral ore buried in their cores that mineral mines can extract Mines produce 75% pure metals and 25% ore. Ore is a waste product that smelters can turn into metals.

Planets receive some of their climate heat from their star. The rest of their heat comes from atomic reactions on there own core and from
hyper dimensional energies . If a planet ever reaches a hyper dimensional stress level that is greater than 1000 units the planet is in danger of exploding.

Many planets have intelligent native life that will move into your ground base if they like your race. The natives may take actions to help you. Such as provide cargo items, build ship parts and gather minerals. They pretty much do what every they wish independent of your control.

Often times space junk will fall from space and provide raw minerals. Contraband and natural growing foods can sometimes be found on some planets.

A ground base can attack other ground bases belonging to enemies on the same planet, if they win they will gain all the enemies goods for their own base.

A planet can be destroyed by the Super Laser
super weapon . The resulting asteroid field can be transformed back into a planet by the Protomatter Cannon super weapon.