That’s why we have day and night! SEYMOUR: The Sun keeps us warm ... So this is how we measure days, and months and years. Let's make a model of the Earth and the Sun. Place a ball on a stick ...

Humans have been sending people and machines to the moon to explore it. If we think the day and night on the moon are the same as how they are on the earth, we are fully mistaken. The days and ...