New Explanation For Mysterious Universe Expansion Rate Discrepancy: We Live In A “Hubble Bubble”

Over the last few years , a dramatic tenseness has come up between measuring of theexpansion rate of the universe . unlike access to measuring this cosmogonic parameter have deliver different solution and astronomer have been very in use try out to empathize why . Is the elaboration charge per unit of the population change over sentence or is there is something unseasonable with our measurements ?

A recent newspaper , published inPhysics Letter B , is going for the latter but it is not position the blame on anyone ’s work . Professor Lucas Lombriser from the University of Geneva suggests that we might be in a queer cosmic zone where the average density of the creation is about half as much as the eternal sleep of the macrocosm . This would make the variance disappear .

“ These two value bear on becoming more accurate for many years while remaining dissimilar from each other . It did n’t take much to spark a scientific argument and even to arouse the exciting hope that we were perhaps dealing with a ‘ young physical science ’ , ” Lombriser say in astatement .

The two main approach to measure the elaboration rate of the existence , know as the Hubble parameter or H0 , used the cosmic microwave background ( the first light that freely polish in the population ) and explosion of a special character of supernova . Lombriser ’s interest is on the latter .

The value obtained with the supernova is susceptible to the matter density of the creation . On large scale , we believe that the universe is unvarying but on diminished scales , this is not always the character . Lombriser calculate that if we were in a low - concentration " Hubble house of cards " about 250 million light - years across , the two measurements would no longer be so irreconcilable .

“ If we were in a kind of gigantic ‘ bubble ’ where the concentration of matter was significantly low-toned than the known compactness for the entire creation , it would have consequence on the distance of supernovae and , ultimately , on regulate H0 , ” explain Lombriser . “ The probability that there is such a wavering on this scale is 1 in 20 to 1 in 5 , which think of that it is not a theorizer ’s illusion . There are a lot of regions like ours in the vast universe . ”

The supposition is interesting in that it does n’t need any exotic explanations , but it is not a confirmed root . In astronomy , we always need to face the fact that we should not be in a especial place in the universe to explain what we see . If Lombriser is correct , we might be , but until we can prove that the mystery of the expansion of the macrocosm remains .