NASA Science: Planetary Planetary science is a grand human enterprise that seeks to understand the history of our solar system and the distribution of life within it. Planetary science missions inform us about our neighborhood and our own origin and evolution; they are necessary precursors to the expansion of humanity beyond Earth. Through five decades of planetary exploration, NASA has developed the capacity to explore all of the objects in our solar system. Future missions will bring back samples from some of these destinations, allowing iterative detailed study and analysis back on Earth. NASA plans to return humans to the Moon and establish a cadence of missions to Mars, asteroids, and other bodies in the solar system, but only after they have been explored and understood using robotic missions. These missions set up a long-term presence to inform future exploration of farther destinations, including crewed missions to Mars. For more information visit: science.nasa.gov
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