Jupiter's Great Red SPOT is an anticyclonic storm that has been raging on the planet Jupiter for at least 300 years. It is a large, oval-shaped area in the planet's atmosphere that is characterized by its reddish color. The SPOT is estimated to be about 10, 000 miles wide and is believed to be a type of hurricane. It is the largest known storm in the Solar System and is thought to be caused by the planet's strong internal heat. The term 'Great Red SPOT' is derived from the Latin word for 'SPOT' which is 'MACULA'.