There are several reasons why the JunoCam images of Jupiter look so different. One of them is the perspective from Juno: The spacecraft is in a polar orbit, so images taken at high latitudes and near the poles are not foreshortened, as they are in Earth-based images (and those from previous spacecraft). That’s why the turbulent regions at high latitudes look so stunning. JunoCam’s images are also at a higher resolution than those taken before.
Another reason is JunoCam’s wide field of view, which spans 58°. So instead of capturing a mere snippet of the planet, we see an entire swath of swirling clouds at high resolution in every image.
Senior Scientist, Planetary Science Institute,
and Co-Principal Investigator of JunoCam,