study and possible reuse on a future mission. Derivatives Canadarm2 Based on the Canadarm1, the larger Canadarm2 is used for berthing the trusses, berthing the commercial vehicles, and inspecting the whole International Space Station. Canadarm3 The smaller Canadarm3 will be used for berthing the modules and inspecting the Lunar Gateway. In popular media On November 13, 2012, Google Canada displayed a doodle on its home search page to celebrate the 31st anniversary of the Canadarm's first use in space. See also List of Canadian inventions and discoveries References External links NASA:RMS: PAYLOAD DEPLOYMENT AND RETRIEVAL SYSTEM Canadian Space Agency : Canadarm CBC Digital Archives - Canadarm - A Technology Star Spacecraft components Space program of Canada Science and technology in Canada Space Shuttle program Space robots Robotic manipulators 1981 robots