A lot of the information provided on James Webb discusses how it will look at things that have been redshifted into the infrared and hence look far and old. That's cool from universe forming theories, but personally, I am more interested in the possibility of nearby life. Some of the media reports that James Webb will be able to look at planets, like in the Trappist-1 system, and detect if they have atmospheres. If they do have atmospheres it can detect if they have chemical signatures of life as we know it. To me, that would change my perspective on the universe a lot more than refinements on theories describing how early stars formed.
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