Neptune, long believed to be dark blue, is actually very pale like Uranus, scientists say. They used modern telescopes to re-assess artificially enhanced images taken by NASA's Voyager 2 probe. We can ...

Uranus and Neptune are similar in many ways: the solar system’s outermost planets are both made of gas and ice, and they’re roughly the same size and mass. Yet, curiously, they’re not the same color.

In 1989, Voyager 2 became the first and only spacecraft to ever fly by Neptune, and images from that mission famously show a planet that's a deep azure color. But in reality, Neptune is far more of a ...