Researchers have spotted a huge new active volcano on Jupiter's moon Io by comparing images taken by two NASA missions more than a quarter of a century apart.
The images of the new volcano were taken by NASA's Juno spacecraft and its JunoCam as it made a flyby of Io — the solar system's most volcanic body — on Feb. 3 this year. The images were captured on the nightside of Io, illuminated only by reflected sunlight from Jupiter.
