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That whole process of galaxies forming and evolving over 13 plus

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billion years, we've learn a lot about that but we're really missing a key

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piece of that puzzle and that is how galaxies got their start. So that's the 

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piece we haven't seen yet and that's the James Webb Space Telescope will allow us

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to see for the very first time. So the first stars and galaxies 

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are really a big mystery for us. We don’t know how that happened; we don't know when it happened. 

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We have a pretty good idea that they were very much larger than the sun and that they 

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would burn out in a tremendous burst of glory in just a few million years, which is really very

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short. But they would also prepare the way for further generations of stars like the sun 

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to be formed. So those first stars would produce the chemical elements of life

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like carbon and oxygen and nitrogen and iron and sulfur and calcium

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and all the things we’re made of, would have been produced in those first generations of stars

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that then explode and liberate their material back into space so the next

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generation of stars can form with planets with solid bodies 

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and possibly have life.