What did people think causes day and night?

What kind of lung sound would you hear in a dehydrated patient? Which element in your atmosphere causes scatter of light? What is the space that seperates two nuerons? Why do Shadows move in a curved pattern from morning to afternoon? What is a date mount? How do you make a hole in cardboard that shows the moon over a month? How did the astrolabe affect the renaissance? What type of rocket was used to launch the Apollo missions? When did the mount shasta last erupt? How does mass vary Along the main sequence? What was the vehicle used to explore the moon's surface? In which direction and around what time of day does a first quarter Moon rise? What would be shorter if earth revolved faster? Where does a body have least weight in earth? How can you tell if you're in the northern hemisphere? What are the names and the year of the satellite and robots on mars? How does Santa know your sleeping? Why did America think it was important for them to win the space race? When was the lunar rover invented? What is a large system of stars and other bodies is known as?