The surface of the moon. Children's fairytales tell us that the moon is made of cheese, but like all bodies in the solar system, rock is the more realistic ingredient. The moon's surface is covered with dead volcanoes, impact craters, and lava flows, some visible to the unaided stargazer. read more
The Moon changes from a thin crescent to a full moon and back again to a crescent in one month (actually 29 days, which is a lunar month). Figure 2. The Phases of the Moon. read more