Freezing_WISE's_Hydrogen.jpg

Summary

Description Freezing WISE's Hydrogen.jpg	English: A scaffolding structure built around NASA's Wide-field Infrared Survey Explorer, or WISE, allows engineers full access to the spacecraft while its hydrogen coolant is being frozen. The WISE infrared instrument is kept extremely cold by a spherical tank filled with the frozen hydrogen, called the cryostat. The cryostat enclosure can be seen at the top of the spacecraft.
Date	11 December 2009
Source	NASA Image of the Day
Author	NASA/JPL-Caltech/Space Dynamics Lab

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