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The Earth has a mean radius of 6371 km … it is actually a bit larger if you measure around the equator (radius 6378 km) than if you measure through the poles (radius 6357 km), giving a slightly “flattened” shape. The Earth has a mass of 5.974×10(27) g, or 5,974,000,000,000,000,000,000,000,000 grams. Pretty big!
