International Space Station Expedition Four crewmembers have prepared six dosimeters that will measure how much radiation they will absorb during next week's spacewalk, scheduled for Feb. 20. Flight Engineers Carl Walz and Dan Bursch will wear three dosimeters each during the spacewalk, which will be the second spacewalk conducted through the Joint Airlock Quest (DAILY, Jan. 25). The dosimeters are part of the EVARM experiment, aimed at developing better radiation shielding ...

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