One billion years after the birth of the universe, time moved five times slower than it does today, according to a report published in Nature Astronomy on July 3.latest researchbecame clear.
Valuing an important prediction of Einstein’s theory of general relativity, the discovery shows that when astronomers look far into the universe, they aren’t just “looking at it when it was young.” Indicated. What I was seeing was a “moving in slow motion” universe.
The universe, thought to have been born in the Big Bang 13.8 billion years ago, has been expanding ever since. However, the expansion speed is not constant.Time flies faster as we get older, study says
time dilation in space
This time dilation in the universe was derived from a study of 190 quasars. A quasar is an extremely bright supermassive black hole located far away, at the center of a galaxy in the ancient universe.
Quasars have been used as clocks to measure the passage of time since the universe was one-tenth its present age. The breakthrough was that by studying quasars using different wavelengths of light, they were able to standardize their ‘steps’.
“If you were in this young universe, one second would feel like one second[…]But from our standpoint more than 12 billion years in the future, time at that time seems to be slow.” and lead author at the University of SydneyDepartment of PhysicsandSydney Astronomical InstituteProfessor’sGeraint LewisYes.
expanding universe
“Thanks to Einstein, we know that time and space are intertwined, and that the universe has been expanding since the Big Bang,” he added. “This expansion of the universe means that the early universe we observe should appear to be moving much more slowly than it does today.”
Until now, astronomers have measured time dilation by using supernovae as clocks, but that has only been able to prove time dilation back to half the age of the universe. This is because it is difficult to see supernovae that existed in the early universe.
“While supernovae behave like flashes of light and are easy to observe, quasars are more complex, like fireworks in progress,” says Lewis. “What we did was figure out this fireworks display and show that quasars can be used as a reference for measuring time in the early universe.”
