The moon, Saturn and Neptune will rise a little before midnight for those in the U.S. Heads up stargazers! The moon will rise ...

An icy object in perfect sync with Neptune reveals new details about planetary migration and unseen bodies far beyond the Kuiper Belt.

A team of astronomers discovered a strange object in the outer solar system that is in a resonant orbit with Neptune.

Images of Uranus and Neptune released after the Voyager 2 flybys in 1986 and 1989 compared with a reprocessing of the individual filter images in this study.

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.

The dark spot on Neptune was strange, however, because it disappeared after Voyager 2's observations. Then, in 2018, the Hubble Space Telescope detected several new Neptunian dark spots in both ...

Over the past few years, the white clouds that usually shroud Neptune’s surface have disappeared, and it may be because of changes in the sun’s activity over its 11-year cycle ...

No spacecraft has visited Neptune since Voyager 2 swooped past in 1989 on its way out of the Solar System, but from a vantage point 4.4 billion kilometers away, Webb is showing us Neptune in a ...

With Pluto spending 20 years of its 248-year orbit within the orbit of Neptune, you might expect that at some point, the two worlds could catastrophically collide. However, Pluto and Neptune never act ...

Neptune, for example, has an atmosphere made of hydrogen and helium (with just a tinge of methane), and it doesn’t really have a surface—or, at least, not what we think of as a surface.