8 crew conducted the first two-person spacewalk at the International
Space Station. Unlike previous spacewalks conducted by ISS crews,
there was not a crewmember inside the Station as the spacewalkers
which is also known as an extravehicular activity, was based out
of the Pirs Docking Compartment. The spacewalkers wore Russian Orlan
This was the
52nd spacewalk devoted to Space Station assembly, operations and
maintenance, bringing the cumulative total to 322 hours and 32 minutes.
It was the 27th based out of the Station, bringing the total to
155 hours and 17 minutes.
more about the spacewalks required to build the International Space
Cosmonauts and Astronauts and Suit ID
Michael Foale (EV1): blue stripes
Alexander Kaleri (EV2): red stripes
Michael Foale, Alexander Kaleri
Time: 3 hours, 55 minutes
Start time: 3:17 p.m. CST (2117 GMT) Feb. 26, 2004
End time: 7:12 p.m. CST Feb. 26, 2004 (0112 GMT Feb. 27, 2004)
spacewalk was cut short due a cooling system malfunction in Kaleri's
spacesuit. Although the spacewalk ended early, Foale and Kaleri
were able to complete a number of their tasks.
The first task
was the replacement of cassette containers that are holding sample
materials for an experiment that is studying the effect of long-duration
exposure to the microgravity environment. Later, Foale replaced
two similar cassettes housed on the outside of Zvezda.
attached to the outer hull of the Zvezda Service Module a Russian
experiment named Matryoshka, which will provide data on radiation
exposure to the human body during space flight.
also removed one of the suitcase-sized devices associated with the
Japanese Aerospace and Exploration Agency's MPAC-SEEDS experiment.
They relocated a second device. This experiment is studying micro-meteor
impacts and material exposure in the space environment. This experiment
was installed on the ISS by Expedition
3 spacewalkers Oct. 15, 2001.
crew was not able to complete the removal of laser light retroreflector
devices from the aft end of Zvezda. The reflectors are being studied
as navigation devices for the European Space Agency's Automated
Transfer Vehicle, which is slated to arrive at the ISS in 2005.
task not included was work on a materials
science experiment called Kromka. This experiment measures the amount
of residue emitted from Zvezda's jet thruster firings.