Support grows for a return to ice giants Uranus and Neptune

The solar system's two most distant worlds may be ready to give up their secrets

Uranus and Neptune

THE OTHER BLUE PLANETS  Uranus (left) and Neptune (right) have not been visited since Voyager 2 sped by in the late 1980s. Many researchers argue that it’s time to go back.

Both: JPL-Caltech/NASA

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