Jupiter's Great Red Spot is different from what an Italian astronomer observed in 1665

Jupiter’s Great Red Spot, a massive storm within the planet’s atmosphere, has long been a subject of debate among astronomers regarding its age and origin. New research suggests that the storm formed around 190 years ago, contradicting the theory that it was observed by Giovanni Domenico Cassini in the 17th century. Despite its relative youth, the Great Red Spot remains the largest and longest-lived vortex in our solar system. The storm, measuring about 10,159 miles wide and over 200 miles tall, is visible even through small telescopes. Over time, it has been shrinking in size and becoming more rounded.