A Look at How NASA Tests Its Craft For the Deep Freeze of Space

You ’re looking at the James Webb Space Telescope as it ’s take down into NASA ’s Goddard Thermal Vacuum Chamber . Inside the dreary cavern , it is subjected to the same unfriendly environment as it will have in space .

How do they do that ? Well , the 40 - foot - improbable , 27 - infantry - diameter cylindrical chamber is empty of tune using vacuum pumps , then uses fluid atomic number 7 and even cold liquid He to drop the temperature . It gets down to -387 degrees Fahrenheit , or 40 point Kelvin . Which is pretty cold !

Fortunately , the James Webb Space Telescope , 116 daylight after it was first placed into the bedroom , is now out . And , mercifully , still working . [ NASA ]

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