It seems that dark energy, the mysterious power that expands the universe, weakens, according to a survey that can “overthrow” the current scholars of the fate of the universe.
If this is emphasized, the results of the Dark Energy Sifer Team at the Kitt Peak National Observatory in Arizona will have deep effects on theories about the development of the universe, which opens the possibility that its current expansion can eventually be reflected in a “major crisis”.
The note that the dark energy has reached its climax billions of years ago that would preach the first significant change in decades to the theoretical model that is widely acceptable to the universe.
“What we see is extremely interesting. It is interesting to believe that we may be on the threshold of a great discovery about the dark energy and the basic nature of Kina,” said Professor Alexei Latod Harrent, the co -pool of Desi and a cosmic scientist at the University of California, Santa Cruz.
Dark energy was discovered in the late 1990s when astronomers used the remote supernova explosions to investigate how the cosmic expansion rate changed over time. The expectation was that gravity should address the expansion that was going on since the big explosion, but instead, the super layers indicated that the expansion rate was accelerating, driven by some unknown power Which scientists called dark energy.
The dark energy is supposed to be fixed, which means that the universe will fulfill its end in a clinic scenario called “great freezing”, when everything is eventually far away until light cannot bridge the gap between galaxies. The latest results, which were announced on Thursday in the world of the American Physical Society Physics The summit in Anaim, California, challenge the prevailing view.
Desi 5000 “eyes” is used Plan the universe with unprecedented precision. It picks up the latest version of data data 15 meters, and extends from the date of 11 billion years, which astronomers have used to create the three -dimensional map that is more detailed for the universe so far.
The results indicate that the dark energy has reached the height of strength when the universe was about 70 % of its current age and that it is now the weakest of about 10 %. This means that the expansion rate is still accelerating, but this dark energy gently raises its foot from the pedal.
“What we find is that, yes, there is something that pays the galaxies away from each other, but it is not fixed. It is retreating,” said Professor Carlos Frenk, a cosmic scientist at Durham University and a member of Disi’s cooperation.
The results do not fulfill the so -called The five threshold and prosecution Statistical certainty that is the golden standard in physics to demand discovery. But many in cooperation have turned in recent months of suspicion to support with the confidence of this result.
“I am not on the fence.” “I looked at the data carefully. For me, this is a strong result. We are witnessing the overthrow of the old model and the emergence of a new model.”
Professor John Beckok, a cosmic scientist at the University of Edinburgh and Disi collaborator who expressed doubts about the development of dark energy at the Royal Society meeting last year, was proud. “Extreme claims require extremist evidence,” he said. “There is almost nothing in science. I would like to bet on my house. But I will put 1000 pounds on this result.”
Others continue to reserve the ruling. “Taking the house from this analysis is that … the measurements do not yet provide decisive evidence to develop dark energy. They may do as Disi accumulates more data,” said Professor George Evestathio of the University of Cambridge, who did not participate in the results.
If the dark energy continues to decline to the point where it becomes negative, the universe is expected to end in the scenario of the inverse explosion known as the big crisis.
Scientists do not know why dark energy, which is generally estimated, may fade about 70 % of the universe – with the rest of a dark and ordinary issue – or whether this will indicate that the laws of physics change or that the decisive component is missing from them.
“It is fair to say that we have no idea about the dark matter or dark energy. Continuous dark energy [theory] It is already a sufficient challenge. I feel: “As if things were not complicated enough.”
“But you can also look at it more positively. For 20 years, we stumbled with dark energy. Now physicists have new questions.”
