GENERAL KNOWLEDGE

Detailed explanation-1: -Jupiter’s rocky moon Io is the most volcanically active world in the solar system, with hundreds of volcanoes, some erupting lava fountains dozens of miles (or kilometers) high.

Detailed explanation-2: -Io is heated up by the strong gravitational pulls of Jupiter on one side and the large moons Europa, Ganymede, and Callisto on the other. This gravitational tugging stretches and bends Io causing it to heat up, much as a ball of clay warms up as you squeeze it repeatedly.

Detailed explanation-3: -Io’s volcanism makes the satellite one of only four known currently volcanically active worlds in the Solar System (the other three being Earth, Saturn’s moon Enceladus, and Neptune’s moon Triton).

Detailed explanation-4: -Volcanoes on Io: Io, a moon of Jupiter, is the most volcanically active body in our solar system. It has over 100 active volcanic centers, many of which have multiple active vents. Eruptions recurrently resurface large parts of the moon. NASA image.