The moon is sma l ler than the earth. It is three hundred and eighty thousand kilometers away from us. In 1969, two Americans got to the moon by spaceship. They found no living things there. And there is no air or water there. It is too hot in the day and too cold at night. So n othing can live on the moon. E verything on the moon i s much Iighter. Walking on the moon is like jumping and flying. So we can j ump higher on the moon than on the earth .