sentences: a sun is a mean of celestial preposition / mind & what is on the bottom of the sun is a mean of detailed getting ->  what is on the surface of the moon is a kind of detailed observation of a celestial object  what is on the surface of the moon is a kind of detailed observation of a celestial object & detailed topsoil of celestial grouping requires a fly & a wave is used for observing comes -> a telescope can be used to observe what is on the surface of the moon