New Horizons Vehicle Banner

Neptune Library


ATMOSPHERE


Mostly Hydrogen and Helium with traces of Methane. Home to the fastest winds in the solar system (2,100 km/h).

ATMOSPHERIC DATA
Wind Speed: 2100 km/h

TEMPERATURE


Average temperature of **-214°C**, though it has an internal heat source that radiates twice the energy it receives.

THERMAL STATS
Surface: -214°C

ORBITAL CYCLE


One year on Neptune lasts about **165 Earth years**. It has only completed one full orbit since its discovery in 1846.

ORBITAL DATA
Orbit: 60,190 Days

Neptune Great Dark Spot

Unlock Neptune's Secrets

Dive into the atmospheric mysteries of Neptune. From the transient Great Dark Spot to the supersonic winds and methane ice clouds, discover the extreme weather dynamics of our solar system's outermost giant.

READ NEPTUNE BLOGS