Stargazers are excited as a rare planet parade is expected to happen this weekend bringing some of the main characters of our ...

Frigid and far-flung Neptune, our solar system's outermost planet, is adding to its reputation as an enigmatic world, with astronomers puzzled by a surprising drop in its atmospheric temperatures ...

Neptune is the farthest planet from the sun in our solar system and home to blistering winds and diamond rain.

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.

Most people think of Uranus and Neptune as pale greenish blue and royal blue. But a new study shows the two planets are actually a very similar color.

Neptune has been getting colder over the last two decades, according to a new study. The blue planet is the eighth in our Solar system, and the furthest away from the Sun, floating around 2.8 ...