NASA Juno spacecraft reveals Jupiter's volcanic moon Io like never before in spectacular new images

A stunning image of the volcanic moon Io as seen by Juno on Dec. 30, 2023.

During its 57th flyby of Jupiter, NASA's Juno spacecraft came closer to the planet's moon Io than any other mission has in the last two decades.

Passing within around 930 miles (1,500 kilometers) of Io, the most volcanic body in the solar system, on Saturday, Dec. 30, 2023, Juno was able to capture stunningly detailed images of the Jovian moon. The only time a spacecraft has come closer to Io was in 2001, when NASA's Galileo spacecraft passed 112 miles (181 kilometers) above Io's south pole.