The earth moves round the s     . When our part of the earth turns to the sun, it is d        .When our part of the earth turns a           from the sun, it is  night. The sun is much bigger than the moon. But sometimes the moon looks bigger than the sun, because it is much n        to the earth. The sun is very  bright. It gives very strong l         . The moon looks quite bright, but it d           give any light at all. The light from the moon comes f          the sun. The    moon looks much bigger and brighter t       the stars. But in fact the stars are a lot bigger and brighter than the m         . They look smaller than the moon because they are f        away from the earth.