NASA's Juno probe spots massive new volcano on Jupiter moon Io 

 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. 

https://cdn.mos.cms.futurecdn.net/xmagtJAcf2Sk36pNcct7WR.jpg

https://www.space.com/jupiter-juno-probe-massive-new-volcano-io