jupiter's moons- Io
Io was discovered by Galileo Galilei in 1610, on January 8th.
Some say Io looks like a pizza with olives and melted cheese with pepperoni. It looks like this because of the volcanic eruptions. Io has lots of volcanic activity. When the volcanoes erupt, they spew out hot lava causing coloration to the surface.
What is a moon ?
A moon is a natural satellite to a planet. It orbits the planet it belongs to.
Facts about Io-
The mass- 8.9319 x 1022 kg
Distance from Jupiter- 2,650,230.2
Rotation- 1.769 Earth days
Atmosphere- sulfur dioxide