A true color approximation of Jupiter’s moon Io taken by the Galileo spacecraft in 1999. (credit: PIRL/University of Arizona)

A volcano spread across an area greater than Lake Michigan could erupt any day. Located on Jupiter’s moon Io scientists predict that Loki, named after the Norse trickster god, is due to explode sometime in mid-September. The volcano last erupted in May 2018, an event also predicted by scientists. 

“Loki volcano is huge — 200 kilometers across. It’s large enough th