Great Red Spot
The Great Red Spot is a persistent high-pressure region in the atmosphere of Jupiter , producing an anticyclonic storm that is the largest in the Solar System . Located 22 degrees south of Jupiter ‘s equator , it produces wind-speeds up to 432 km/h (268 mph). Observations from 1665 to 1713 are believed to be of the same storm; if this is correct, it has existed for at least 356 years. [1] It was next observed in September 1831, with 60 recorded observations between then and 1878 when continuous observations began. The Great Red Spot may have existed since before 1665, but the present spot was first seen only after 1830, and well-studied only after a prominent apparition in 1879. The storm that was seen in the 17th century may have been different than the storm that exists today. [4] A long gap separates its period of current study after 1830 from its 17th century discovery. Whether the original spot dissipated and reformed, whether it faded, or if the observational r...