International Space Station gets new storage room!


On March 2, 2011, astronauts on the US Space Shuttle Discovery attached a new module (called Leonardo) to the International Space Station (ISS).  This new module, which was docked to the ISS, will be used for storage.  On return to Earth, as requested by the Japanese, Discovery will bring back a bottle which contains a sample of vacuum - what do you think will be in that bottle if it is ever opened?