I don't think Dr. Kipping is correct but he does make a good case for himself. I think he makes the same mistake that I or others have made but in a different part of their solution.

https://www.astro.columbia.edu/profile?uid=dkipping

https://youtu.be/PqEmYU8Y_rI

https://youtu.be/HdpEGDNc1Uw

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