**University of Maryland
Where: College Park, Md.
Department: Space Systems Laboratory
Don a space suit and climb into a neutral buoyancy tank to conduct low- and zero-gravity tests on next-gen astronaut gear, as well as space- and deep-sea-bound robots. Maryland's 50-foot-diameter, 367,000-gallon tank is one of only two in the U.S., and the only one at a university.