The side facing the Sun is very very hot. The side away from the Sun is very very cold. It is often called Earth's twin because it is almost the same size as Earth. It is surrounded by thick clouds of hot poisonous gases. It is hotter on Venus than it is on Mercury even though Mercury is closer to the Sun.
Earth is the third planet from the Sun .
It has one moon. It takes 24 hours to spin on its axis. Earth orbits the Sun once every 365 and a quarter days. MARS Mars is fourth planet from the Sun. It is 11 times bigger than Earth.