The Great Red Spot Probably Formed in the Early 1800s

"Great Red Spot from P7 Flyover". Credit: NASA / SwRI / MSSS / Jason Major © public domain

Jupiter’s Great Red Spot (GRS) is one of the Solar System’s defining features. It’s a massive storm that astronomers have observed since the 1600s. However, its date of formation and longevity are up for debate. Have we been seeing the same phenomenon all this time?

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