Giant ‘super Hubble’ telescope completes cryogenic testing | Daily Mail Online

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NASA’s James Webb Space Telescope has completed its nearly 100-day testing series in the cryogenic vacuum chamber, where temperatures dip hundreds of degrees below the freezing point.

The team unsealed the 40-ton door of Chamber A on Saturday, marking the end of a critical test stage ahead of the telescope’s launch.

The vault-like door was

via Giant ‘super Hubble’ telescope completes cryogenic testing | Daily Mail Online