● Our earth has only one satellite, that is, the moon. ● Its diameter is only one-quarter that of the earth. Hence statement 1 is correct. ● It appears so big because it is nearer to our planet than other celestial bodies. ● It is about 3,84,400 km away from us. ● The moon moves around the earth in about 27 days. ● It takes exactly the same time to complete one spin. ● As a result, only one side of the moon is visible to us on the earth.