»Gravity«, 2007 by Aleksandra Mir. The 20m high rocket was built out of junk and had smoke coming out of its windows. It stood in the Roundhouse, London, a former industrial train turning station that has since become a permanent performance space. The materials took five months to source from various scrap yards in England. Most of it is steel or fiberglass, plus a few tractor tires and several industrial fans, and the bottom part is a discarded tank from a toothpaste factory. Video.