MOON The Moon is Earth’s closest neighbor in space - the only other member of our solar system that humans have actually visited. This video answers key questions about the Moon, like: What keeps it revolving around the Earth? Why do we see only one side of the Moon? What is the origin of the Moon? Students will learn about how the Moon has been studied throughout history-including recent lunar missions-and about its phases, eclipses and how it causes tides on Earth. A fun, hands-on activity will demonstrate the effect of the Moon’s gravity on weight. This program is based on the concepts outlined in the National Science Education Standards for Earth Science: Structure of the Earth System, Earth’s History and Earth in the solar system.