Don't see why refraction needs to explain lots of observations?
While dark matter may fit multiple different observations better, it may also be the multiple different observations are due to multiple phenomena. So really don't see any reason we need a magic bullet that fits all observations...
Frankly, I think refraction and reflection make a good candidate for explaining redshift of the universe, and should be easily testable...
While dark matter may fit multiple different observations better, it may also be the multiple different observations are due to multiple phenomena. So really don't see any reason we need a magic bullet that fits all observations...
Frankly, I think refraction and reflection make a good candidate for explaining redshift of the universe, and should be easily testable...
Relevant: https://physics.stackexchange.com/questions/435853/does-ligh...