New data from the James Webb Telescope confirms an unexplained discrepancy in measurements of the expansion of the universe. Scientists are worried.
There is something wrong with the measurement model of the universe. The James Webb Space Telescope measures the rate of expansion of the universe, and its data matches measurements made by the Hubble Space Telescope. . However, this is not necessarily good news.
And these results do not match those of other measurement methods. This means that no solution to the so-called “Hubble tension” has been found.
“Hubble tension” with no resolution in sight
The “Hubble tension” highlights fundamental uncertainty. It is true that the universe is expanding in all directions. Scientists are still struggling to determine the exact rate of this expansion. . The fact that we cannot yet calculate it accurately suggests that there may be variables that are still unknown to our understanding. This is a reminder that we are still in the early stages of fully understanding the universe.
Although it seems like we can’t change it, Everything in the universe is actually moving away from us at a rate calculated as the “Hubble constant.” . This speed, which Webb and Hubble telescope measurements agree on, is about 73 kilometers per second per megaparsec.
Measurements by other methods, such as looking at remnants of the early universe, such as optical remnants of the cosmic microwave background and sound waves frozen over time, have concluded that: The universe is expanding at a rate of 67 kilometers per megaparsec per second. .
James Webb and Hubble data
There is no consistent explanation for this discrepancy. May be due to data inaccuracy Even though multiple measurements were taken to try to minimize errors.
Although the Hubble Space Telescope is a powerful tool, it has limitations. Although visible wavelengths can overcome the effects of atmospheric distortions, Near-infrared analysis faces challenges essential to eliminate space dust interference.
The James Webb Telescope, on the other hand, is a powerful infrared telescope, so it doesn’t have the same problem.
Is it a dark energy problem?
“Webb’s measurements provide the strongest evidence to date that systematic errors in Hubble’s Cepheid photometry do not play a significant role in Hubble’s current distortions,” said Johns Hopkins University. said Adam Rees, who works on the new measurements at the Space Telescope Science Institute. James Webb telescope.
conclusion from researchtherefore it is that There is no convincing explanation for the Hubble tension. . Scientists speculate that the reason may be the mysterious force dark energy. But that’s a topic for another article.