Blum, J., Beitz, E., Bukhari, M., Gundlach, B., Hagemann, J., Heißelmann, D., Kothe, S., Schräpler, R., von Borstel, I., Weidling, R. Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System. J. Vis. Exp. (88), e51541, doi:10.3791/51541 (2014).