Good question. We have photos of the backside taken by satellite but can't find an explanation as to why the layperson seeminly cant find any published earth photos of Jupiter without the spot in last 400 years. https://spaceplace.nasa.gov/all-about-jupiter/en/ Animated gif showing spot drifting (relative to what?): https://upload.wikimedia.org/wikipedia/commons/a/a3/790106-0203_Voyager_58M_to_31M_reduced.gif Why can't I find a picture taken from earth that is missing the red spot. Maybe it's the only view that people like to publish. Edit: this picture appears to be missing the red spot, taken from hubbell https://esahubble.org/news/heic1010/