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This article is not at all reliable. At one point it says the radius of the entire universe (not observable, entire) is 23 trillion light years across, but at another point it says our universe is open, which means it would be spatially infinite. (Our actual best current model says our universe is spatially flat, which is different from both.)Ivan Seeking said:
At another point it says that SR says "time stops" at the speed of light, which is a common pop science misstatement.
The article references no actual scientific papers, just other pop science sources.
In short: this article is not a valid basis for PF discussion. The main claim made in the OP has been refuted. This thread is closed.