Honestly, the answer to that question at this time in ELI5 is “Yes, no and maybe.” It all depends on some theories that conflict with each other based on current data and observations. The James Webb telescope is providing new data that is making huge strides in clarifying some things but raising other questions. It is an extremely exciting time for the field. Even for a someone like myself that doesn’t follow closely but was a physics minor in college and kept up on the big stuff.
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