How long does it take to travel around the world?
If you wanted to travel around the world without stopping, how long would it take you? Earth is the fifth largest planet in the Solar System and has a circumference of 40,070 km (24,898 miles) according to measurements by orbiting spacecraft. Its radius is 6,378 km (3,963 miles), making its diameter 12,756 km (7,926 miles). […]