Neptune, the farthest planet from the Sun, has long been a subject of fascination for astronomers, especially due to its ...

The planet Neptune has a large dark spot "with an unexpected smaller bright spot adjacent to it," inveru observations using ...

Prior to flybys, scientists used mathematical laws and observation to determine the characteristics of the planets.

On Aug. 20, 1977, NASA launched the Voyager 2 spacecraft on a mission to explore the outer planets. Despite its name, this ...

While most of the planets will be visible to the naked eye, others will require special equipment to be spotted.

Most of the planets are visible to the naked eye, though binoculars or a telescope might be needed to see Uranus or Neptune.