Jupiter pulls so hard on Io that the moon’s solid ground rises and falls by as much as 100 metres every orbit — a tide in rock the height of a 30-storey building, and the repeated flexing powers the most volcanically active world in the Solar System

Io's ground can move by as much as 100 metres as Jupiter's changing tide flexes the moon, converting orbital energy into the heat that drives its volcanoes. The post Jupiter pulls so hard on Io that the moon’s solid ground rises and falls by as much as 100 metres every orbit — a tide in rock the height of a 30-storey building, and the repeated flexing powers the most volcanically active world in…