Our effective intellect of the cosmos as a whole is gathered together in the Standard Model of Cosmology . Over the last few years , research worker have founda major tensionwithin one of the cardinal tenets . Estimates of the elaboration pace of the universe of discourse obtain with different methods end up develop unlike numbers , suggesting the universe might be more complex than we have derive to believe .
A new study has strengthened this tension by add new data to the trouble . The measure of the expansion rate of the world obtained with the cosmic microwave oven background is about 67.66 ( km / s)/Mpc where Mpc digest for Megaparsec ( a million parsec ) . However , measurements from galaxies over the last few years suggest that the economic value is something around 74 ( km / s)/Mpc .
The ( km / s)/Mpc unit might seem peculiar but it becomes clearer once its story is known . It was devise by astronomer Edwin Hubble who first discovered that almost every Galax urceolata in the population is moving out from us . He remark the relation , now known as Hubble ’s constabulary , between the speed at which the galax is receding ( the km / s part ) and the distance from us ( expressed in megaparsec or Mpc ) . measure the receding upper of a galaxy is amazingly easy but its distance is a whole other approximate range .
The raw research , publish inThe Astrophysical Journal Letters , used improved measurements of the distance of four special wandflower . These galax legion maser – radio waves analogous to optical maser – produce by an active supermassive blackened hole . This rare configuration allow astronomer to down length measurements . They found that their expansion rate value is around 73.9 ( km / s)/Mpc .
“ examine the received modelling of cosmogony is a really challenging problem that requires the best - ever measurements of the Hubble Constant . The disagreement between the promise and measured values of the Hubble Constant points to one of the most primal trouble in all of natural philosophy , so we would care to have multiple , independent measuring that corroborate the job and test the model . Our method is geometric , and completely independent of all others , and it reward the discrepancy , ” lead author Dom Pesce , a researcher at the Center for Astrophysics – Harvard and Smithsonian , said in astatement .
It is unclear exactly why this variant exists , so it ’s hard to know how to improve the Standard Model of Cosmology . Hoepfully , more observations will bring home the bacon wise insight into the cause of the deviation .
