NASA spacecraft spots hot lava on distant world Io MashableNew observations of the most volcanic world in our solar system solve a mystery that began with Voyager 1 CNNScientists are starting to learn why this moon keeps erupting with volcanoes The Washington PostJupiter’s Moon Io Does Not Have Subsurface Magma Ocean, Study Suggests Sci.NewsIo Probably Doesn’t Have a Global Magma Ocean After All Eos