Space Freezing WISE's Hydrogen


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Freezing WISE's Hydrogen


A scaffolding structure built around NASA's Wide-field Infrared Survey Explorer, or WISE, allows engineers to freeze its hydrogen coolant. The WISE infrared instrument is kept extremely cold by a bottle-like tank filled with frozen hydrogen, called the cryostat. The cryostat can be seen at the top of the spacecraft. Image Credit: NASA/JPL-Caltech/Space Dynamics Lab (More at NASA Picture Of The Day)