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Neptune

Neptunus

The farthest planet — a deep blue world of supersonic winds and icy storms. Neptune is a dark, cold, and mysterious realm where the solar system's most ferocious winds tear through methane-laced clouds.

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Diameter

49,528 km

Distance

4.50 billion km

Orbital Period

164.8 years

Day Length

16.11 hours

Gravity

11.15 m/s²

Temperature

-201°C

Moons

16

Discovery

Urbain Le Verrier & Johann Galle — September 23, 1846

Atmosphere

Hydrogen (80%), helium (19%), methane (1.5%)

Exploration Missions

Voyager 2 (1989)Future orbiter missions planned for 2040s

Interesting Facts

  • Neptune has the strongest winds in the solar system — up to 2,100 km/h
  • It was the first planet located via mathematical prediction
  • Neptune's Great Dark Spot is a massive storm system
  • The planet's vivid blue color comes from methane absorption
  • Neptune has a faint ring system with distinct arcs

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