Check the use of prepositions in the sentences below and ma

A The sky over the Atacama desert is hardly ever cloudy.  B At night, the sky is incredibly clear – you feel that there is nothing among you and Mars. C The biggest observatory in the world is being built on top of a mountain. D In 1971, it rained in the Atacama desert. E In the village of Chungungo they are now getting water from the flog clouds.