Complex sentence: SpaceX was founded with the goal of reducing space transportation costs and enabling the colonization of Mars.Falcon 1 and Falcon 9 launch vehicles, both of which were designed from conception to eventually become reusable.
Split into simpler sentences: SpaceX was founded with the goal of reducing space transportation costs and enabling the colonization of Mars. It has developed the Falcon 1 and Falcon 9 launch vehicles, both of which were designed from conception to eventually become reusable.