Canadarm2 is a robotic arm used on the International Space Station (ISS). It was launched in 2001 and is an advanced version of the original Canadarm, which was used on the Space Shuttle. The arm is about 18.5 meters long and can move in multiple directions, allowing it to assist with various tasks in space. The primary functions of Canadarm2 include capturing visiting spacecraft, performing maintenance, and supporting astronauts during spacewalks. It is operated remotely by astronauts aboard the ISS or from the ground, showcasing Canada's contributions to international space exploration and technology.