- the fifth moon in distance from the planet Jupiter.
- orbits Jupiter at an average distance of 262,000 miles, similar to the distance the Moon orbits Earth.
- very similar in size to our own moon.
- most volcanically active object in the solar system.
- volcanic plumes rise almost 190 miles (300 km) above the surface.
- Io has an iron core just like Earth, meaning it could have its own magnetic field.
- the moon’s orbit cuts across Jupiter’s powerful magnetic field producing 400,000 volts of electricity across its surface.
- Jupiter’s magnetic field strips off 1 ton of material from Io every second!
- Io is often compared to a pizza due to its unusual surface which is made up of sulfur dioxide deposits.
Io’s temperature from extremely hot to extremely cold – areas which feature volcanic activity can reach temperatures of over 2000C (4000F), away from these areas – volcanic activity, however will see temperatures plunge to -143C (-230F).
- extremely hostile environment with little or no chance for the existence of life.