"Starting with our flyby of Earth back in 2013, Juno citizen scientists have been invaluable in processing the numerous images we get with Juno," said Scott Bolton, Juno principal investigator from the Southwest Research Center in San Antonio. "During each flyby of Jupiter, and now its moons, their work provides a perspective that draws upon both science and art. They are a crucial part of our team, leading the way by using our images for new discoveries. These latest images from Europa do just that, pointing us to surface features that reveal details on how Europa works and what might be lurking both on top of the ice and below."

JunoCam snapped four photos during its Sept. 29 flyby of Europa. Here's a detailed look:

Europa up close

JunoCam took its closest image at an altitude of 945 miles (1,521 kilometers) over a region of the moon called Annwn Regio. In the image (not shown), terrain beside the day-night boundary is revealed to be rugged, with pits and troughs. Numerous bright and dark ridges and bands stretch across a fractured surface, revealing the tectonic stresses that the moon has endured over millennia. A circular dark feature in the lower right is Callanish Crater.