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.

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.

Hubble Space Telescope imagery Neptune has revealed that the planet's clouds are disappearing. Credit: NASA Goddard Space ...

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 ...

Now nearing a close conjunction, Saturn and Neptune sit just to the right of the crescent Moon in the morning sky.

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 ...

Voyager 2 also took Neptune's upper atmosphere temperature. Webb scientists were surprised to learn that the planet has cooled over the past 34 years by hundreds of degrees. It's now about half as ...

The planet with a greenish blue tinge is reaching opposition on September 21, 2024, when it will be most clearly visible. However, it is rising in the night skies across India tonight.