That whole process of galaxies forming and evolving over 13 plus
billion years, we've learn a lot about that but we're really missing a key
piece of that puzzle and that is how galaxies got their start. So that's the
piece we haven't seen yet and that's the James Webb Space Telescope will allow us
to see for the very first time. So the first stars and galaxies
are really a big mystery for us. We don’t know how that happened; we don't know when it happened.
We have a pretty good idea that they were very much larger than the sun and that they
would burn out in a tremendous burst of glory in just a few million years, which is really very
short. But they would also prepare the way for further generations of stars like the sun
to be formed. So those first stars would produce the chemical elements of life
like carbon and oxygen and nitrogen and iron and sulfur and calcium
and all the things we’re made of, would have been produced in those first generations of stars
that then explode and liberate their material back into space so the next
generation of stars can form with planets with solid bodies
and possibly have life.