3:30 p.m. CST, Friday, Feb. 8, 2002
Expedition Four Crew

This week the Expedition Four crew - Commander Yury Onufrienko and Flight Engineers Carl Walz and Dan Bursch - worked with several of the science experiments aboard the International Space Station. They tested the ultrasound instrument in the Human Research Facility rack, activated the EarthKam experiment and the seventh sample cylinder in the Protein Crystal Growth - Single-locker Thermal Enclosure System, and tested the Zeolite Crystal Growth Furnace, which will be used to grow crystals beginning in April. The crew also completed their periodic physical fitness tests.

In addition, Walz and Bursh prepared a set of three dosimeters each that will be used to measure any radiation they might receive during their scheduled Feb. 20 spacewalk. The dosimeters are part of the EVARM experiment, which is studying the amount of radiation astronauts receive during spacewalks to better design future radiation shielding in spacesuits.

Today, the crew spent their 64th day in space doing an inventory of the supplies aboard the station. The inventory will help planners determine how much and what kind of supplies the next station crew will need. The crew began the inventory process today and will complete it as time permits.

On Monday, the crew's normal work was interrupted for a few hours when a main computer in the stationís Zvezda module unexpectedly went off-line, disrupting the system that controls the spacecraft's orientation. The computer was quickly brought back on-line and all station systems have operated normally since then. Russian controllers are still working to determine the cause of the disruption.

On Wednesday, Onufrienko celebrated his 41st birthday. He and his crewmates have been in space since Dec. 5. The crew has a light weekend of planned activities ahead, but usually takes time to complete a variety of odd jobs on their task list, a list of work aboard the station that does not need to be done at any specific time.

Information on the crew's activities aboard the space station, future launch dates and times, as well as station sighting opportunities from anywhere on the Earth, is available on the internet at: Details on station science operations can be found on an internet site administered by the Payload Operations Center at NASA's Marshall Space Flight Center in Huntsville, Ala., at:

The next ISS status report will be issued Feb. 15, or sooner, if developments warrant.


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