Astronomy - Planet Earth
The Earth is a sphere flattened at the poles.
The diameter of the Earth is about 12800km
The circumferance is pi x diameter = 40212km (27000 miles)
The Earth moves around the Sun and also moves around its axis.
The movement around its axis takes 24h (one day).
The movement around the Sun takes 325.25 days (one year).
The path of the Earth around the Sun is not a circle but is elliptical.
Back to learning list ------Back ----------------------------------------------Next