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How did our solar system form and evolve?

From the outset, JPL has been the global leader in exploration of the solar system, and we will continue the quest to deepen our understanding of our cosmic neighborhood. Future missions may target the primitive celestial bodies that contain the building blocks of the solar system, the giant planets and their moons whose formation and evolution disclose essential planetary processes, or potentially hazardous Earth-crossing objects such as comets and asteroids.