Neptune and Uranus have long been neglected when it comes to solar system exploration. Many astronomers think that is a shame, as these two planets are particularly weird outliers among the bodies that orbit the Sun. Uranus, for example, the seventh planet from our Sun, has a unique tilt that makes it appear to spin sideways, orbiting the Sun like a rolling ball while circled by nine, dense rings. Both Uranus and Neptune may also have diamond rain in their atmospheres.
Known as the Uranus Orbiter and Probe, the mission will most likely involve a cone-shaped probe that will dive down into Uranus's atmosphere, coupled with a kind of satellite that will get stunning, up-close views of Uranus's many moons.
