Moon has a day of 14 1/2 of our days, and its night is also 14 1/2 of our days.
It has no atmosphere or water and there is no life on it.
It has a large number of craters; and a thick layer of fluffy sand.
It has a large number of mountains; and it faces the earth with one face only, the other hemisphere is invisible to us on earth.
Its core is cold.
It has a fluctuating surface temperature: from severe heat at day time, to severe coldness at its night.
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Planet Mercury has much similarity to our Moon, with many differences, like that: Mercury has one of its hemispheres always facing the sun with a perpetual day on this side, while the other hemisphere is in perpetual night.
(Notice the difference: our Moon faces the sun for 14 1/2 of our days, and then this side will be in the darkness of night for 14 1/2 of our days.