SpazeIce giant
Neptune
The windiest planet, with gusts over 2,000 km/h. It was found with mathematics before anyone saw it through a telescope.
- Diameter
- 49,244 km
- Gravity
- 1.14 g
- Day
- 16 h 6 min
- Year
- 165 Earth years
- Cloud tops
- −201 °C
- Moons
- 16
Can we live on Neptune?
Air: H₂ 80%, He 19%. Not breathable: you’d need a suit and your own oxygen.
Gravity: 1.14 g. Someone who weighs 70 kg on Earth would weigh 80 kg there.
Clouds: Methane clouds and the fastest winds in the solar system.
Atmosphere
- H₂ 80%
- He 19%
- CH₄ 1.5%
Measured by Voyager 2, NASA fact sheet