Dropping In Microgravity Environment (DIME) is an annual contest held by NASA's Glenn Research Center. Teams of high school students, with one "faculty adviser", from anywhere in the United States or its territories can enter. The teams prepare and submit proposals for research to be performed; four teams are selected to travel to the Glenn Research Center and perform their experiments in the "drop tower", a deep shaft that can be completely depressurized and thus simulate microgravity when an object is in free fall in it. A further four teams' experiments are selected and conducted by the Center staff. The teams are responsible for writing their proposals, assembly of the necessary equipment if their experiments are chosen to be performed, testing of the setups at their respective homes,