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The windiest world
Neptune is the eighth and farthest planet from the Sun. It is an ice giant similar in composition to Uranus but with a more vivid blue color. Neptune has the strongest sustained winds of any planet, reaching speeds of 2,100 km/h. Its largest moon, Triton, orbits in the opposite direction to Neptune's rotation (retrograde orbit), suggesting it was captured from the Kuiper Belt. Triton has geysers that shoot nitrogen gas 8 km into the sky. Neptune was the first planet located through mathematical prediction rather than direct observation.
Day Length
16.11h
0.7x Earth days
Year Length
60,190d
164.79x Earth years
Avg Temperature
-214°C
-218° to -200°C
Moons
16
Has rings
No Solid Surface
Radius
24,622 km
Mass
1.024 x 10^26
Surface Gravity
11.15 m/s²
Escape Velocity
23.5 km/s
Rotation Speed
9,719 km/h
Orbital Speed
5.43 km/s
Distance from Sun
4.5 billion
Composition
Water, methane, ammonia ices over rocky core
Instant death from cold and wind
There is no solid surface to stand on. No breathable oxygen. Extreme cold of -214°C would freeze you instantly.
Neptune's winds are the fastest in the solar system at 2,100 km/h
It was discovered mathematically before being seen through a telescope
Neptune takes 164.8 Earth years to orbit the Sun
Triton is slowly spiraling inward and will eventually be torn apart by Neptune's gravity