Mystery solved? Hubble tension explained by alternative theory of gravity, study says

According to a study published in the scientific journal Monthly Notices of the Royal Astronomical Society (MNRAS), Scientists may have found a new answer to Hubble tension. The Hubble Constant is a measurement created to analyze the expansion rate of the universe, but measurement methods give conflicting results; this discrepancy is called the Hubble voltage.

To understand the difference in results, scientists applied an alternative theory of gravity. In addition to being easily explained, Hubble’s tension was eliminated by the application of the thesis. The theory called modified Newtonian dynamics (MOND) explains: There are ‘bubbles’ that can explain discrepancies in measurements; ‘bubbles’ refer to regions in the universe where there is less matter.

According to MOND, gravitational forces do not obey the laws proposed by Albert Einstein under certain conditions. Theoretically there are areas with subdensities (bubbles), i.e. Regions of lower density, excluding inconsistencies attributed to the expansion rate of the universe specified by the Hubble Constant; in this case, they can be attributed to the uneven distribution of the substance.

What is the Hubble Constant?

It is possible to explain in a few words that the Hubble Constant is the rate of expansion of the universe, created by the astronomer Edwin Hubble and named in his honor. The measurement shows that the expansion rate is calculated in units of kilometers per second per megaparsec (km/s/Mpc); One megaparsec is equivalent to approximately 3.26 million light years. Currently scientists believe the measurement is between 66 km/h/Mpc and 74 km/h/Mpc, but there are other results that offer different figures.

Hubble voltage

Scientists use early measurements and late measurements of the universe to calculate the Hubble Constant, but both give different results; For this reason, the phenomenon was called the Hubble tension. The study suggests The differences may be explained by the fact that Earth is located in a region where there is very little matter compared to the rest of the universe. In a simpler comparison, they explain it as if there were air bubbles in the cake.

Standard measurement models do not take into account that the Earth is in this ‘bubble’, but actually describe matter as being evenly distributed throughout the universe. By applying the MOND model, they realized that the Hubble tension disappeared, leaving only a single result for the expansion rate of the universe.

“Einstein is believed to have said that we cannot solve problems with the same way of thinking that gave birth to them in the first place. While the changes required are not too drastic, we may be witnessing the first reliable evidence in over a century that we have succeeded,” physicist Indranil Banik of the University of St Andrews wrote in an article on his website. , said we need to change our theory of gravity. Speech.

Did you like the content? Stay up to date with other astronomy and physics curiosities at TecMundo. If you wish, take the opportunity to learn about the new technique that promises more precise measurements of cosmological distances.