Do we really think that expansion is a constant thing in the far far future? We already have different expansion rates in the theory (Big Bang was explosively f

Do we really think that expansion is a constant thing in the far far future? We already have different expansion rates in the theory (Big Bang was explosively fast, and now there is a measured speed of expansion), but is that "constant"? Does the redshift measurements assume a constant expansion, has someone looked at the redshifts data to show historical expansion rate differences somehow maybe with candles? And... aren't most stars super-long-lived dwarfs anyway? The headline seems a bit misleading.