I do not claim to be an expert in cosmology.
That's obvious.
CNN is part of the establishment.
CNN??
You think CNN is an authority on cosmology? Do you have the slightest clue how science works?
Do you understand peer-review? Do you know how wealthy and famous an astronomer would become if he could provide a shred of evidence for a flat earth that could stand up to scrutiny?
What do you think the establishment it?
That question isn't in English.