An curved arrow pointing right. The surface of Io, one of Jupiter's many moons, is an especially hostile environment – even for space. Scientists recently observed its atmosphere completely ...

resolving some issues about how Io's volcanoes erupt and raising broader questions about similar magma oceans within other moons and planets. Data from previous missions had made planetary ...

Io is an incredibly active and extreme place, with glistening lava lakes and volcanic eruptions shooting sulfur and magma to ...

The story's author referenced "extremely close flybys" of Jupiter as being "within 930 miles (1,500 kilometers) of the surface" and also noted Io's many volcanoes and the theory that "Jupiter was ...

34,734 people played the daily Crossword recently. Can you solve it faster than others?34,734 people played the daily Crossword recently. Can you solve it faster than others?

(CNN) --The Galileo spacecraft took the closest pictures yet of Jupiter's moon Io, a final photo shoot that captures molten lakes and crumbling cliffs on the most volcanic body in the solar system.