The best map ever of the primitive form of the universe has just given them a precise confirmation of the age of the cosmos and its expansion rate. However, discoveries continue to leave great cosmological mysteries.
Our last and best map always Universe Primitive is five times more detailed than any other we have had so far.
However, despite accurately supporting the main model of the universe, it is also a two -edged knife because the new data It does not bring us clues to solve some of the greatest mysteries of cosmology.
As shown through a new video, the map shows Clear image of Cosmic Background Radiation in Microwave (CMB) – A reminiscent radiation of the early stages of the universe.
Previous data situated the age of the universe at 13.8 billion years and the expansion rate (known as Hubble constant) in 67 to 68 kilometers per second by Megaparsc away from Earth. ACT data confirm These data, increasing accuracy and confidence in these conclusions.
ACT not only offers better resolution and sensitivity than previous maps, but also measures CMB polarization, or the orientation in which light waves oscillates, revealing some information on how CMB light has evolved over time.
And the mysteries for solving?
Jo Dunkleyfrom the University of Princeton, which was part of the project, explained to New Scientist that the data allowed to more accurately determine the ingredients of the universe, its dimension, its age and its expansion rate. However, the findings continue to leave large mysteries open.
“When looking at the polarization of CMB with more detail, we could have seen something different, such as the rupture of the standard cosmological model. Because whenever you look at the universe in a different way, you can’t be sure that the original model will continue to work. We were ready to see something that would move away from this model, some subtlety. But we didn’t see“, He exposed.
This, on the one hand, may have been reassuring for those working at Lambda-CDM; But, on the other, It was not a welcome news for all scientists.
Colin HillFrom the University of Columbia, in New York, he told the same magazine that he expected to see in the data some evidence of an unlawful phenomenon that could help explain the so-called hubble tension: the discrepancy between the expansion rate of the universe given by the Lambda-CDM standard model and what we measure directly.
ACT has collected the data that make up this new map between 2017 and 2022, but has now been closed. Dunkley says it is unlikely to get a higher resolution map for a few years.
