You're not reading this correctly. It's questioning the assumption that the Supernova are of the same brightness no matter the age of the star. Because the su

You're not reading this correctly. It's questioning the assumption that the Supernova are of the same brightness no matter the age of the star. Because the supernovaing stars are on average older now then they were in the early universe, there's a systemic bias in the data making it seem like there is red shift when there is not. No new physics required outside of a new understanding of how Type Ia supernova work.