At the time, the Earth would have been far closer to the moon than it is today, making it perhaps twice as large in the lunar ...

NASA scientists have sought to understand planet Jupiter, the gas giant whose mass is more than the rest of the planets in ...

What’s more, data from Juno’s Io flybys has revealed the subsurface temperature profile of Io, the innermost of the four ...

Io’s volcanism is powered by a gravity-driven mechanism called ... After ruling out all other causes, NASA scientists concluded that Voyager had seen an alien world’s volcanic eruptions. They reported ...

While our moon is relatively calm, Io is considered to be the most volcanically active world in our solar system. And while Earth, of course, has plenty of active volcanoes of its own, eruptions ...