Neptune Odyssey: why we need to visit an ice giant
Planetary Radio: Space Exploration, Astronomy and Science
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Triton, a Big Sister to Pluto, or a Giant Planet Orbiting a Gigantic Planet?
Triton is roughly the same distance from the sun as pluto, about 30 astronomical units. A voyager did not have an imaging spectrometer on board so we don't have as good compositional information on the surface of triton that we do from new horizons at pluto. So it's a nice opportunity to study a corper belt object without having to go as far as new horizons. But we have to slow down to go into orbit with a much larger and more capable spacecraft.
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