Space.com: NASA's Juno spacecraft will get its closest look yet at Jupiter's moon Io on Dec. 30

During the flyby of Io this weekend, all of Juno's three cameras will be active. The Jovian Infrared Auroral Mapper (JIRAM), will be collecting information about the volcanic moon's heat signature locating volcanoes and calderas across the Jovian moon. Meanwhile, the navigational star camera, the Stellar Reference Unit, will collect the highest resolution images of the volcano-riven surface of Io yet gathered.