DNVN - Research from NASA's James Webb telescope has just been published, making a remarkable discovery, showing that the expansion rate of the universe is 8% faster than previously estimated.
This discovery raises an important question in astronomy: Are there as yet poorly understood factors, such as the influence of dark matter or dark energy, that are influencing this expansion rate?
The James Webb Space Telescope, the most powerful telescope ever built, has provided precise data to confirm Hubble's findings on the rate of expansion of the universe, or "Hubble Tension." The finding disproves the theory that Hubble's technical flaws could have skewed the data, and raises questions about an unexplained factor in cosmology.
The report, published on December 9 in the Astrophysical Journal, said that the current expansion rate of the universe is about 8% higher than calculations based on initial conditions and the evolution of the universe over the past billions of years. Adam Riess, one of the lead authors and winner of the 2011 Nobel Prize in Physics, affirmed that this shows that humanity still has a lot to understand about the universe.
"We cannot explain why the universe is expanding so rapidly. Our current understanding is very limited, especially regarding dark matter and dark energy - two elements that make up 96% of the universe. This is an urgent problem that needs to be solved," said Mr. Riess.
Dark matter, which makes up 27 percent of the universe, is invisible and cannot be directly observed, but scientists can detect it through the gravitational pull it exerts on other objects. Meanwhile, dark energy, which makes up 69 percent of the universe, is thought to be the main cause of the accelerating expansion rate, counteracting the pull of gravity.
One big mystery remains unsolved: Are there undiscovered elements within dark matter and dark energy, or is there some new physical phenomenon that is affecting the rate of expansion?
Researchers at Johns Hopkins University used three measurements to determine the distance to distant galaxies, based on observations of Cepheids. The measurements from James Webb and Hubble matched perfectly, strengthening evidence that the expansion rate of the universe is far greater than predicted by traditional theory.
When calculating the Hubble constant—a measure of the rate at which the universe is expanding—standard theory predicts a value of between 67 and 68 km/s/Mpc. However, data from both telescopes show a value of up to 73 km/s/Mpc, with a range of between 70 and 76 km/s/Mpc.
Riess said that to address this phenomenon, scientists need to collect more data to determine the extent of the deviation in the measurement values.
While many questions remain unanswered, the study underscores the need for continued data collection and further research. Future discoveries could radically change humanity’s understanding of the universe and the mystical forces that govern its existence.
Ganoderma (t/h)
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