The universe is expound faster and faster . This accelerated expansion has been measured in a variety of ways , but there is a major problem . calculate on whether you ’re looking at the very distant universe or not , you get two dissimilar number for the enlargement pace of the universe .
This crisis in cosmology has been baffle astrophysicistsfor several years now . A raw study has measure out the elaboration rate of the universe with a different method and find out that the discrepancy in the act is by all odds there .
In a paper accepted inThe Astrophysical Journal , the squad draw how they evaluate the infrared properties of 63 elliptical galaxies within 330 million light - years ( 100 million parsecs ) of Earth . The uranologist used the open brightness wavering ( SBF ) proficiency , which works for egg-shaped galaxies because they are one-time and have a consistent universe of old champion .
The research worker measured the Hubble invariable – also know as H0(H - naught or H - zero ) – finding a time value for it of about 73 kilometers per 2nd per megaparsec . This mean that if two galaxy are 1 million secpar apart , they would appear to be move away from each other at a speed of 73 km ( 45 miles ) per second ,
This is consistent with other methods that looked at the expansion rate in the local world , but it is larger than what was measured in the very former universe . Observation of the cosmic microwave oven background put H0at around 68 kilometers ( 42 statute mile ) per 2nd per Megaparsec .
“ For appraise distance to galaxies out to 100 megaparsecs , this is a fantastic method , ” Centennial State - author Professor Chung - Pei Ma , from the University of California , Berkeley , said in astatement . “ This is the first paper that piece a large , homogeneous set of data , on 63 galaxies , for the end of studying H - naught using the SBF method . ”
The fact that several autonomous methods all encounter unlike values is truly a challenge . There could be something we have not taken into account in our theories – or maybe the uncertainty on the measurements is too optimistic .
“ The jury is out , ” Professor Ma tell . “ I think it really is in the error prevention . But don everyone ’s error bars are not underestimated , the tension is have uncomfortable . ”
Whatever the cause , this tension is here to detain . cosmogony is at an important intersection . Humanity ’s understanding of the universe is both the best it has ever been , and yet limited . New observation tower , both on the ground and in space , will hopefully provide new way to look at the universe of discourse and help solve this mystery .
