This artist's conception pictures the Orbiter Atlantis delivering the S0 truss (starboard zero or S-Zero) to the ISS during STS-110 mission in April 2002. The S0 truss is the centerpiece of the ISS framework, it supports solar panels providing additional power to the International Space Station. The payload also included the first part of a Mobile Transporter designed to provide a moveable base for the Station’s Canadian robotic arm.