ALT Animated gif that transitions from a Webb test/commissioning image of Jupiter and its moon Europa into a new Webb image of just Europa. The first image features Jupiter appearing to glow with bands of bright white, light yellow, and darker, brownish oranges. To the left of Jupiter, Europa appears as a tiny, black circle with a bright starburst erupting from its edges. The second image shows Europa as a fuzzy blue and white sphere against a black background. This sphere features darker blue patches in most of the northern hemisphere facing the viewer. One, large, crescent-shaped, white patch extends along the left side of the southern hemisphere facing the viewer, and a larger, blobby, white patch covers the middle latitudes of the right side of the southern hemisphere. Lighter blue regions border these white patches in the south.