James Webb Space Telescope is about halfway through its instrument checks

The James Webb Space Telescope is halfway through testing its instrument modes for science operations, expected to begin in mid-July.

The James Webb Space Telescope is equipped with four advanced instruments, making the $10 billion observatory the most distant, oldest galaxiesoccurring in the early universe only a few hundred million years after the big bangand study their chemical composition. These instruments have 17 science modes, and each science mode must be tested before the telescope can begin science operations in mid-July.

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