What field of science investigates ideas about a possible ex?

Will there be an eclipse in 2012? What moon has a frozen ocean? How were John Glenn and Alan Shepard's flights different? What is the asthernosphere made up of? How does Demeter react when Zeus informs her that Persephone must stay in the Underworld? Who created a balloon? How do you spell callipiter? How can dark matter be measured and what methods are currently being used to study its presence in the universe? How do you know when a tornado is near? Why do the Chinese open there windows and doors at midnight? What was the intended purpose of Columbia STS 107 space shuttle mission? What clouds are called mare's tails? What are highlands of the moon called? Why don't you see bats in day time? What happens every month? Why are the Rocky Mountains called the rocky mountains? What part of the wave travels the farthest distance? What is the name of the star next to the big dipper? What are the names of other galaxies besides the Milky Way? On what planet does the Sun exert the most gravitational force?