The entire surface of this hellish moon is covered in lakes of lava
Jupiter’s moon Io, which is as full of volcanoes as a porcupine is full of quills, is the most volcanically active world in the solar system. At any given time, about 150 of Io’s 400 or so active volcanoes are erupting. The moon is constantly spewing lava and gas, a veritable factory of volcanic excretions. … Read more