How fast is the universe expanding? Measure the circumference

By Debkumar Mitra

Recently, many theoretical scientists and physicists have described it as an error and have ignored it. So, the believers decided to count once more and, here, the measurement came to the same result: our universe is growing at a faster rate than the theory had predicted.

The space between galaxies increases in the same way that two points of a balloon separate when air is blown into it. How fast is the universe expanding? As the Hubble Space Telescope (HST) and other star-turned looks seek to answer this question, they face a fascinating difference between theory and experience; between forecasting and observation.

According to a report from NASA's Goddard Space Flight Center, a latest study by astronomers using NASA's Hubble Space Telescope (HST) to measure the rate of expansion of the universe indicates that "new theories might be needed to explain the forces that shaped the cosmos. " In carrying out this study, which has agreed to be published in a subsequent issue of the Astrophysical Journal, astronomers have claimed to have "crossed a significant threshold by revealing a mismatch between the two key techniques". Thus, the latest figures associated with expansion rates are more refined.

The accepted theory suggests, and there is observation to support, that the universe was born from an event called Big Bang 13 billion years ago.

The latest HST data suggest that the modern world is growing at a faster pace than the early days. The first measurement rate of the universe was captured using data from the Planck satellite of the European Space Agency.

The difference in rate or divergence is a well-studied subject. Many scientists believe that this important difference could be due to erroneous measurements. The latest HST dataset has addressed this situation by reducing the "possibility that the difference is just a stroke of luck at 1 in 100,000". Using a new drift and shift technique (DASH), the team proposed a new estimate that the Hubble constant, a measure of the rate of expansion, is 74 km (46 miles) per second by megaparsec. This technique has replaced the centuries-old method used by astronomers to use the cephide variables, very bright and distant stars that predictably pulsate, as cosmic criteria for estimating nearby intergalactic distances.

The new number means "for every 3.3 million light years away that a galaxy is far from us, it seems to move 74 km faster, as a result of the expansion of l & # 39; universe. " He tells us that the universe is growing 9% faster than the "67 km per second per megaparsec forecast," which was designed to use the Planck satellite dataset to study the early universe.

If astronomers are to live with this new number for the Hubble constant, we must know what causes the acceleration of the universe. The theory says that three "black lords" of the universe play their games: dark matter, dark energy and dark radiation.

According to new research by Johns Hopkins scientists, the energy of early darkness has mysteriously appeared in the early universe and now accounts for 70% of the universe's total content and has begun to blow it up.

Then comes dark matter, an invisible matter that does not consist of electrons, protons, or neutrons, which seems to have mutated and interacts more strongly with matter and radiation and could play a role in the separation. galaxies.

Others assume that the universe contains a new type of subatomic particles that move at a speed close to that of light. These fast particles – collectively known as Dark Radiation – also play a role in acceleration.

Which lord of darkness will win the voices of astronomers? Or, is there a theory of Thanos hiding in plain view, in the hope of shedding light on the game of acceleration? Astronomy is waiting for the lights of galaxies to get brighter and brighter as they go by.