You must invade all planets. To conquer a planet send enough units to it. Once conquered it will start generate units for you (bigger is the planet, faster it produces). To send units, first select the "departure" planet by clicking/touching it
Nothing goes right in space! The number of extraterrestrials is growing dramatically, and they are now starting to fight for every inch of territory. Their plan is to steal yours. Don't let them do it! Increase your population and try to invade enemy planets. Increase your power and try to conquer their territory!