STS-100 Extravehicular Activities

The STS-100 crew conducted two space walks while at the International Space Station. The main objectives of the space walks were to install the Space Station Remote Manipulator System -- the station's robot arm -- and an Ultra High Frequency antenna. Learn more about the space walks required to build the International Space Station.

EVA Astronauts and Suit ID
Chris Hadfield: Red stripes
Scott Parazynski: Solid white suit

Robot Arm Operators>
Jeff Ashby
Umberto Guidoni

Space Walk Coordinator
John Phillips

EVA 1
Chris Hadfield, Scott Parazynski
Actual Time: 7 hours, 10 minutes
Actual Start Time: 6:45 a.m. CDT, April 22, 2001
Actual End Time: 1:55 p.m. CDT, April 22, 2001

Hadfield and Parazynski connected cables that will feed the initial electrical power, computer commands and video between the station and the new robot arm, which is also known as Canadarm2. They installed and deployed an ultra high frequency communications antenna that will enable the station to conduct future space walk communications and that will improve future shuttle-station communications. Then, they released launch bolts that held the Canadarm2 secure during its trip to orbit, unfolded the arm and prepared it for control from inside the station.

EVA 2
Chris Hadfield, Scott Parazynski
Time: 7 hours, 40 minutes
Actual Start Time: 7:34 a.m. CDT, April 24, 2001
End Time: 3:15 p.m. CDT, April 24, 2001

The two space walkers removed an early communications antenna from Unity that is no longer needed and prepared for the arrival of the station airlock during STS-104. Parazynski made eight cable connections to prepare the arm to "switch ends" using the lab fixture - a Power and Data Grapple Fixture. Hadfield disconnected the four power, command and video cables that were installed between the pallet and station during the first space walk. Then Parazynski and Hadfield secured a critical spare part for the station's electrical system called a Direct Current Switching Unit to the stowage platform, in place for use by future crews if needed.