@Stahesh

Astronomical inflation could be fake

They claim the red shifting of stars is Doppler shifting and that stars are going away from us

Outer space is not a perfect vacuum

The reason stars are red shifted could be that light is red shifted when it travels through a medium

This could potentially mean that the reason for the alleged red shift is not because stars are moving away but because the light travels through a medium

This potentially negates the alleged astronomical inflation