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.

Scientists have uncovered the secret ingredient fueling supercharged storms on Uranus and Neptune: methane. Uranus and Neptune are the outermost planets of the solar system and are known as ice ...

A study suggests the ice giants Uranus and Neptune aren't quite as watery as previously thought. They may also contain huge amounts of frozen methane, potentially solving the puzzle of how they ...

Neptune is called an “ice giant” because it’s mostly made of a thick, slushy mix of water, methane, and ammonia, which ...

However, they do know that Uranus and Neptune are rich in water, earning them the title of ice giants. And, in the 1980s, it was discovered that occasional massive storms occur on the two planets.

Because Uranus and Neptune are so far away, scientists only have educated guesses about the combination of ices and gases that make up these ice giants. While the general understanding is that ...

In the new view of Neptune, the exception to this is the planet's high-altitude methane ice clouds, which reflect sunlight before it can be absorbed by the methane. These appear as brilliant ...

Neptune's colors in the original pictures were made much more blue than they really are, ... Additionally, a haze of icy methane particles may also play into this color change.

New images from the space-based observatory offer a novel view of the planet in infrared. By Jonathan O’Callaghan No spacecraft has visited Neptune since 1989, when the NASA probe Voyager 2 flew ...