Neptune Orbiter

Neptune Orbiter was a proposed NASA unmanned planetary spacecraft to explore the planet Neptune. It was envisioned that it would be launched sometime around 2016 and take 8 to 12 years to reach the planet; however, NASA's website no longer lists any possible launch date. The Neptune Orbiter was designed to answer many questions that still surround the planet. Its main mission was to study Neptune's atmosphere and weather, its ring system, and its moons, particularly Triton. The California Institute of Technology proposed one mission plan, while the University of Idaho and Boeing proposed an alternative approach.