Neptune is the fourth largest planet in the solar system, with a radius of 15,599.4 miles (24,622 kilometers) — the distance between its core and the surface.

The ice-giant Neptune, the most distant and third largest planet in our solar system, is a distinctive dark blue ball of gas, which may appear calm but is actually throttled by a chaotic atmosphere.

About four years ago, Neptune’s ghostly, cirrus-like clouds largely disappeared, and only a patch of clouds hovering over the ice giant’s south pole exists today.Using almost 30 years worth of ...

Artist's impression of Planet Nine – a suspected “wide-orbit” planet – with the Sun in the distance; Neptune's orbit is shown ...

Neptune has long been depicted as a deeper, darker blue than its fellow ice giant Uranus, ... Neptune: Now astronomers know this planet's true color. January 5, 2024 10:07 AM ET.

Neptune, a frigid planet decorated with supersonic storms, has been visited by only one spacecraft, Voyager 2, which zipped by in 1989. ... hinting at the ice giant’s mysterious dynamism.

Astronomers discovered that C/2014 UN271, a massive comet more than 10 times larger than any known comet, is emitting jets of ...

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 ...

Webb’s detection of auroras on Neptune is the first time astronomers have captured direct evidence of this phenomenon on the planet. NASA, ESA, CSA, STScI, Heidi Hammel (AURA), Henrik Melin ...

New Neptune photos offer rare views of planet’s rings The James Webb Space Telescope’s images of the mysterious ice giant brought humanity a first infrared look at the rings.

Science | November 5, 2024. The Six Most Amazing Discoveries We’ve Made About Neptune. Despite the lack of a dedicated mission to the planet, scientists have learned plenty through ground ...