Mike Boylan-Kolchin finds that six of the furthest and most massive galaxy candidates observed by JWST so far stand to contradict the prevailing thinking in cosmology. Unfortunately, they don't know what "prevailing thinking" to discard.
My theory: Discard the assumption that those galaxies were born from our big bang. They were born from another older adjacent one. A Big Bang Neighbor (or BBN).
https://www.nature.com/articles/s41550-023-01937-7
Proving the Relativistic Energy-Momentum relation, the hard way and the easier way.
This adds the proof for the relativistic mass effects from motion, proving that gravity causes it.
Two reference frames in motions are not symmetrical. A system at rest on the surface of a planet moves faster in time than a moving system. This is not the case using just Special Relativity. This is proven just using the gravitational metric field in General Relativity.