Io, the innermost of Jupiter’s Galilean moons, is known for its active volcanism, which is driven by the gravitational interaction between the moon and Jupiter. The study, published in the journal Science, analyzed the atmospheric isotopes of Io to determine the age of its volcanic activity. The researchers found that the isotopic composition of the gases released by Io’s volcanoes matched the isotopic signature of the moon’s mantle, indicating that the volcanic activity has been ongoing for billions of years.
Volcanic Activity and Mantle Composition
The study’s findings suggest that Io’s volcanic activity has been a continuous process, with the moon’s mantle providing a consistent source of material for the eruptions. This long-standing volcanic activity has likely played a significant role in shaping the surface and geological features of Io over time.