This infrared image of Io from 80,000km reveals hotspots: volcanoes, lava flows and lava lakes

Io volcano world comes into view of Juno probe - BBC News

Nasa’s Juno probe is bearing down on Io, the most volcanically active world in the Solar System.

It’s in the process of making a series of ever closer flybys.

Already, the spacecraft has passed by the Jupiter moon at a distance of 80,000km, to reveal details of its hellish, lava-strewn landscape.

But Juno will get much, much nearer to Io over the course of the next year, eventually sweeping over the surface at an altitude of just 1,500km.

It’s more than 20 years since we’ve had such an encounter with the 3,600km-wide object.  …