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Originally Posted by Hornblower
The author showed a blue galaxy at 7 million light years and a red galaxy at 62 million. She just as easily could have shown a blue one that is farther away. From that, along with her loose use of young and old as if she thinks they apply to the entire galaxy, you appear to have made a great-leap inference of the evolutionary time lines of those galaxies. Beyond that, I cannot follow your line of thought. Your expressions "older (farther away) galaxies" and "newer (closer) galaxies" make no sense to me. You appear to be inferring things that the author never said and never quoted anyone else as saying.
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Yes, this is exactly right. If she had shown the reverse order I would not have questioned it. Oversight on her part? Or is this simply 'not there' that in the time progression of an (expanding) universe the opposite does not exist? Or possibity that we are simply unable to register such blue stars further out? These are the unresolved questions.