I'm a bit OT here, but did you see this image of a Jupiter's aurora captured some days ago with the Hubble telescope?
Poor photoshop fakery.
I can do literally in 15 minutes, a more convincing aurora on Jupiter in Photoshop. And I'm rank amateur!
However, this jupiter/moon hoaxes can be found out in photoshop. They always use an eliptical marquee to make it a perfect circle. Fake CGI spheres are also perfect.
Bonus material:
NASA Jupiter Hoax - NASA Caught&exposed Faking Space Again! https://www.youtube.com/watch?v=CK1xAxog2OM
Educate yourself: Nasa Fraud JUNO FAKE MISSION https://www.youtube.com/watch?v=D5NjN2wt6nI