‘Io’ is moon of the planet
[A] Mercury
[B] Venus
[C] Mars
[D] Jupitor
Io or Jupiter I
- Innermost and third-largest of the four Galilean moons of the planet Jupiter.
- Slightly larger than Earth’s moon,
- ‘Io’ is the fourth-largest moon in the Solar System,
- Highest density of any moon,
- Strongest surface gravity of any moon
- Lowest amount of water (by atomic ratio) of any known astronomical object in the Solar System.
- It was discovered in 1610 by Galileo Galilei
