Moon of Jupiter
Io
The most volcanic place in the solar system, with more than 400 active volcanoes squeezed awake by Jupiter’s tides.
- Diameter
- 3,643 km
- Gravity
- 0.18 g
- Orbit
- 1.8 days
- Volcanoes
- 400+ active
Can we live on Io?
Air: SO₂ 90%, SO. Not breathable: you’d need a suit and your own oxygen.
Gravity: 0.18 g. Someone who weighs 70 kg on Earth would weigh 13 kg there.
Ground: Sulphur and silicate lava from over 400 active volcanoes.
Atmosphere
- SO₂ 90%
- SO
- NaCl
Measured by Galileo, Juno