The dark , elliptically-shaped spot ( with initial dimensions of 13,000 × 6,600 km , or 8,100 × 4,100 mi ) was about the same size as Earth , and was similar in general appearance to Jupiter 's Great Red Spot .
The dark , elliptically-shaped spot ( with initial dimensions of 13,000 × 6,600 km , or 8,100 × 4,100 mi ) was about the same size as Earth , and was similar looking to Jupiter 's Great Red Spot .