Yuri Malenchenko and Sergei Volkov before spacewalk. Credits: NASA
ESA’s Expose facility was retrieved today from outside the International Space Station by cosmonauts Yuri Malenchenko and Sergei Volkov, who were completing a spacewalk to place new experiments on the outpost’s hull.
Expose is a series of chemistry laboratories that place samples in the harsh environment of space unprotected. Subjected to vacuum, radiation, temperature differences and the full blast of our Sun’s energy, 46 species of small organisms and over 150 organic compounds have returned after spending 18 months bolted to the Zvezda module.
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