Ralf Vandebergh’s detail of an image he took on March 21, 2009 showing astronauts working outside the ISS. Credit: Ralf Vandebergh

by Nancy Atkinson on December 10, 2009

Ralf Vandebergh's detail of an image he took on March 21, 2009 showing astronauts working outside the ISS.  Credit:  Ralf Vandebergh

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