NASA's James Webb Telescope Survives Cryogenic Freezing. How hard is the Forensic Detection Telescope?



Last week, NASA announced that the James Webb Space Telescope, which hunted aliens, had passed its latest round of cryogenic tests. Subjected to temperatures close to absolute zero, this raises the question: How tough must this gigantic telescope be?

Yesterday, project deputy director Paul Geithner explained everything to Eric Vilard of NASA's Goddard Space Flight Center.

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