Hello, and welcome! Thanks for making the KSC Web your source for the latest STS-111 news and information.

The primary objectives of the STS-111 crew are to perform the fourth crew exchange aboard the International Space Station, install the Mobile Base System or MBS, and transfer hardware, supplies, and experiments from the Leonardo Multi-Purpose Logistics Module, built by the Italian Space Agency.

The MBS is the second part of the Canadian-built Mobile Servicing Structure that will give the Station's robotic arm, or Canadarm2, its unique mobility. During the first two of three spacewalks, mission specialists will attach the MBS to the Mobile Transporter that was installed during STS-110 and transfer the Station's robotic arm from the U.S. Destiny Lab to the MBS. This will allow the arm to travel the length of the S-0 Truss, and further extensions which will eventually be 356 feet in length.

During the third and final spacewalk, the astronauts will repair the wrist/roll joint on Canadarm2. A new unit will be installed next to the Latching End Effector at the end of the arm. The wrist/roll joint is one of seven joints that contribute to the arm's flexibility.

STS-111 will showcase the teamwork resulting from the close relationships among the ISS international partners. Again, thanks for joining us. Stay tuned for another exciting mission!

Video of Center Director's Message
Part 1 | Part 2