Take a look at these astonishing new images of Jupiter's volcanic moon Io

Jupiter's moon, Io, is seen in this image taken by the spacecraft Juno during a flyby on Dec. 30. (NASA)

There are new, high-quality images of Jupiter's moon, Io, thanks to the nearest flyby of the celestial body by a spacecraft in decades.

NASA released images Saturday taken by the Juno spacecraft, which had been slated to fly roughly 930 miles from the surface of Io, the agency said.