Webb telescope turns up baffling views of the early universe


Just over a year after its historic launch, NASA’s James Webb Space Telescope (JWST) is challenging astronomers’ expectations of the early universe and showing that massive galaxies likely formed much earlier than predicted.

JWST sees in the far infrared part of the electromagnetic spectrum that is invisible to our eyes, according to NASA. This means that the telescope is optimized to capture light from the early universe, which has been stretched out towards these longer and redder wavelengths as the universe has expanded over time — a process known as redshifting.


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