The Jupiter Red Spot Junior is officially named Oval BA (Bad Astronomy?). It is getting reddish as its elder brother, the Great Red Spot. The wind is currently boasting at 640km/h. It just takes 1.5625 seconds to travel from the southest of Malaysia (Johor Bahru) to the northest (Perlis), roughly 1000km, imagine!
Left: The spot in the middle is the Oval BA
As suggested, as the storm has grown stronger it probably picked up red material from lower in the Jupiter atmosphere, most likely some form of sulfur which turns red as part of a chemical reaction.
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