Neptune the blue planet

Neptune is the last of eight planets in our solar system (Pluto was demoted). Neptune is one of the outer "ice giant" planets and has five faint rings.

Neptune 4K image (pan-zoom)

Pan, zoom, or go full-screen with this megapixel image of Neptune.

Neptune facts

Neptune features

Neptune has no solid surface, so only a few atmospheric features are all that are visible.

Rings of Neptune

There are five faint dusty rings around Neptune:

Moons of Neptune (3 out of 14 shown)

Neptune has 14 known moons. Triton is the largest moon and is actually a dwarf planet captured by Neptune's gravity. Neptune's ring shepherd moons are Despina (Le Verrier Ring) and Galatea (Adams Ring). Only three moons are shown - for information on all 14 moons, see Moons of Neptune.

Triton

Despina

Galatea

Neptune vs. Earth ratios

Planet sizes are to relative scale.

NEPTUNE

diameter = 3.9
gravity = 1.1
radiation = 65
surface pressure = ?
solar irradiance = 0.001
day = 0.67
year = 62,932
sun distance = 30

EARTH

diameter = 1
gravity = 1
radiation = 1
surface pressure = 1
solar irradiance = 1
total water = 1
day = 1
year = 1
sun distance = 1